Search Results: "perpendicular lines in geometry"

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09:13
Equations of Parallel and Perpendicular Lines

700 views / 0 likes - added 9 years ago

Equations of Parallel and Perpendicular Lines More free lessons at: http://www.khanacademy.org/video?v=9hryH94KFJA
03:29 Popular
Perpendicular Lines

728 views / 1 likes - added 9 years ago

U04_L2_T2_we1 : Perpendicular Lines More free lessons at: http://www.khanacademy.org/video?v=0671cRNjeKI Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
03:01
Perpendicular lines 2

465 views / 0 likes - added 9 years ago

U04_L2_T2_we2 : Perpendicular lines 2 More free lessons at: http://www.khanacademy.org/video?v=TsEhZRT16LU Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
03:35 Popular
Identifying Parallel and Perpendicular Lines

805 views / 0 likes - added 9 years ago

u07_l1_t2_we1 Identifying Parallel and Perpendicular Lines More free lessons at: http://www.khanacademy.org/video?v=aq_XL6FrmGs Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
08:41
Proving Radius Is Perpendicular To Tangent Line

638 views / 0 likes - added 8 years ago

Proving radius is perpendicular to tangent line
02:31
Perpendicular Line Slope

515 views / 0 likes - added 9 years ago

u13 l2 t3 we1 Perpendicular Line Slope More free lessons at: http://www.khanacademy.org/video?v=ndPq7gbin7A
07:23 Popular
Introduction To Transformations | Transformations | Geometry | Khan Academy

1,747 views / 0 likes - added 8 years ago

Introduction to transformations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigid-transformations-intro/e/performing-translations-on-the-coordinate-plane?utm_source=YT&utm_medium=De
02:53 Popular
Slope Equation for Intersecting Lines

729 views / 0 likes - added 5 years ago

Slope Equation for Intersecting Lines. Part of the series: Equations. Intersecting lines can be properly expressed using the correct slope equation. Find out about the slope equation for intersecting lines with help from a mathematics tutor and educator i
01:37 Popular
Translation Example | Transformations | Geometry | Khan Academy

1,652 views / 0 likes - added 8 years ago

Translation example Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigid-transformations-intro/e/performing-translations-on-the-coordinate-plane?utm_source=YT&utm_medium=Desc&utm_campa
01:25 Popular
Using Rotation Widget | Transformations | Geometry | Khan Academy

1,488 views / 0 likes - added 8 years ago

Using rotation widget Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigid-transformations-intro/e/performing-rotations-on-the-coordinate-plane?utm_source=YT&utm_medium=Desc&utm_campai
08:13 Popular
Points After Rotation | Transformations | Geometry | Khan Academy

1,119 views / 1 likes - added 8 years ago

Points after rotation Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-rotations/e/rotations-1?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson: https://w
02:46 Popular
Defining Rotation Example | Transformations | Geometry | Khan Academy

1,697 views / 0 likes - added 8 years ago

Defining rotation example Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-rotations/e/defining-rotations?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson
01:48 Popular
Using Reflection Tool | Transformations | Geometry | Khan Academy

1,169 views / 0 likes - added 8 years ago

Using reflection tool Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigid-transformations-intro/e/performing-reflections-on-the-coordinate-plane?utm_source=YT&utm_medium=Desc&utm_camp
01:55 Popular
Drawing Image Of Translation | Transformations | Geometry | Khan Academy

1,184 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-translations/e/translations?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson: https://www.khanacademy.org
02:28 Popular
Drawing Line Of Reflection | Transformations | Geometry | Khan Academy

1,047 views / 0 likes - added 8 years ago

Drawing line of reflection Watch the next lesson: https://www.khanacademy.org/math/geometry/transformations/hs-geo-reflections/v/determining-the-line-of-reflection?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Missed the previous lesson? https://www
10:32 Popular
Rotating About Arbitrary Point | Transformations | Geometry | Khan Academy

864 views / 0 likes - added 8 years ago

Rotating about arbitrary point Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-rotations/e/rotations-2?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson:
05:41 Popular
Points On Line Of Reflection | Transformations | Geometry | Khan Academy

1,314 views / 0 likes - added 8 years ago

Points on line of reflection Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-reflections/e/defining-reflections?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next
01:32 Popular
Formal Translation Tool Example | Transformations | Geometry | Khan Academy

1,287 views / 0 likes - added 8 years ago

Formal translation tool example Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-translations/e/defining-translations?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the
07:19 Popular
Reflecting Segments Over Line | Transformations | Geometry | Khan Academy

970 views / 0 likes - added 8 years ago

Reflecting segments over line Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-reflections/e/reflections-1?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesso
03:51 Popular
Can You Solve This MIT Admissions Question? Geometry Problem, 1869

944 views / 0 likes - added 7 years ago

The Massachusetts Institute of Technology (MIT) is one of the top ranked universities in the world. This question appeared on its admissions exam nearly 150 years ago. "The perpendicular dropped from the vertex of the right angle upon the hypotenuse divid
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Gerrymandering: How drawing jagged lines can impact an election - Christina Greer

683 views / 0 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/gerrymandering-how-drawing-jagged-lines-can-impact-an-election-christina-greer District lines, and the groups of voters within them, may seem arbitrary, but a lot of thought (and political bickering) is put into
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Multiply Numbers By Drawing Lines

620 views / 0 likes - added 6 years ago

Gow to multiply numbers by drawing lines. Get the Multiply By Lines Book! https://www.amazon.com/gp/product/1500866148/ If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions Connect on social media. I update each s
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10:01 Popular
CUSTOM GEOMETRY DASH LEVELS?!?

1,657 views / 10 likes - added 6 years ago

► Subscribe and join TeamTDM! :: http://bit.ly/TxtGm8 ► Follow Me on Twitter :: http://www.twitter.com/dantdm ► Previous Video :: https://youtu.be/ap-7XaMMtH4 i never knew you could get custom geometry dash levels.. ► DanTDM MERCH :: http://www.dantdmshop
22:26 Popular
How To Draw A Treasure Chest (parallel lines)

954 views / 3 likes - added 6 years ago

Learn how to draw a treasure chest using parallel lines!
12:51 Popular
I HATE GOING UPSIDE DOWN!!! (Geometry Dash #3)

1,720 views / 14 likes - added 7 years ago

I HATE GOING UPSIDE DOWN!!! (Geometry Dash #3) ► Subscribe and join TeamTDM! :: http://bit.ly/TxtGm8 ► BUY MY NEW BOOK HERE :: http://smarturl.it/DanTDM ► Follow Me on Twitter :: http://www.twitter.com/dantdm ► Previous Video :: https://youtu.be/xRfBMq14Y
26:58
Graphing Lines by Plotting Points (TTP Video 29)

564 views / 1 likes - added 6 years ago

How to Graph lines by making tables and plotting points. Focus will be on developing better techniques.
24:47
Linear Algebra: Parametric Representations of Lines

564 views / 0 likes - added 9 years ago

Linear Algebra: Parametric Representations of Lines in R2 and R3 More free lessons at: http://www.khanacademy.org/video?v=hWhs2cIj7Cw
03:49 Popular
Parallel Lines

1,065 views / 0 likes - added 9 years ago

U04_L2_T1_we1 : Parallel Lines More free lessons at: http://www.khanacademy.org/video?v=T-aCweuimis Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
05:39
Absolute Value and Number Lines

577 views / 0 likes - added 9 years ago

Absolute Value and Number Lines More free lessons at: http://www.khanacademy.org/video?v=frBJEYvyd-8 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
08:05 Popular
Can You Solve The Hardest Easy Geometry Problem?

1,263 views / 1 likes - added 7 years ago

In the figure, what is the value of angle x? This problem is known as Langley's Adventitious Angles. It is also known as the hardest easy geometry problem because it can be solved by elementary methods but it is notoriously difficult to work out. Can you
03:03
Parallel Lines 2

580 views / 0 likes - added 9 years ago

U04_L2_T1_we2 : Parallel Lines 2 More free lessons at: http://www.khanacademy.org/video?v=lOWXZFP8Vuc Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
02:43
Parallel lines 3

597 views / 0 likes - added 9 years ago

U04_L2_T1_we3 : Parallel lines 3 More free lessons at: http://www.khanacademy.org/video?v=y5yNi08cr6I Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
22:58
Geometry Introduction - Basic Overview - Review For SAT, ACT, EOC, Midterm Final Exam

465 views / 0 likes - added 2 years ago

The full version of this geometry review tutorial provides a basic introduction into common topics taught in geometry such as angles and measurement, area, perimeter, volume, surface area. It covers shapes such as circles, squares, rectangles, right trian
02:04
Non-Euclidean Geometry of a Sphere - Christmas Lectures with Philip Morrison

542 views / 0 likes - added 6 years ago

According to Euclidean geometry the angles of a triangle add up to 180 degrees. Philip Morrison shows an example of where this isn't true, and non-Euclidean geometry applies. Watch the full lecture: http://www.rigb.org/christmas-lectures/watch/1968/gulliv
01:25
Sodium Absorption Lines

418 views / 0 likes - added 3 years ago

Burning of sodium bicarbonate in Bunsen flame produces sodium absorption lines in continuous spectrum. Sodium 'D' line absorption shows up as a black line in the yellow of a continuous spectrum. Good as a simulation of the sodium portion of the Fraunhoffe
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Topology, Geometry And Life In Three Dimensions

678 views / 0 likes - added 8 years ago

If you imagine a three dimensional maze from which there is no escape, how can you map it? Is there a way to describe what all possible mazes look like, and how do mathematicians set about investigating them? Subscribe for regular science videos: http://b
00:47
Magnetic Field Lines #shorts

489 views / 0 likes - added 2 years ago

Tossing the iron filings from our magnetic zen garden at one of its magnets to visualize the field lines of magnet force. https://www.curiositybox.com/"How do you clean the iron off the magnet?" Good question. I would say that learning to accept the limit
02:04 Popular
Compose Shapes | Geometry | Early Math | Khan Academy

775 views / 0 likes - added 8 years ago

Learn how to combine shapes to make other shapes. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-composing-shapes/e/compose-shapes?utm_source=YT&utm_medium
02:25 Popular
Halves And Fourths | Geometry | Early Math | Khan Academy

786 views / 0 likes - added 8 years ago

Learn how to divide shapes into two or four equal sections. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-fractions-of-shapes/e/halves-and-fourths?utm_sou
06:09 Popular
Recognizing Shapes | Geometry | Early Math | Khan Academy

1,259 views / 1 likes - added 8 years ago

Learn how to identify circles, triangles, squares, rectangles, rhombuses, and trapezoids. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-shapes/e/naming-sh
12:57
Looney Tuesdays | Tweety's Best Closing Lines | Looney Tunes | @WB Kids

180 views / 0 likes - added 1 year ago

Let's be honest, all of Tweety's lines are iconic but his last lines are a piece of art every single time. Never change Tweety! That's not all folks! Catch up with all your favorite characters - Bugs and Daffy, Tweety and Sylvester, and Coyote and Road Ru
01:31 Popular
Filling Rectangles With Squares | Geometry | Early Math | Khan Academy

1,179 views / 0 likes - added 8 years ago

Learn how to fill rectangles with squares. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-fractions-of-shapes/e/filling-rectangles-with-same-sized-squares?
10:26 Popular
IIT JEE Perpendicular Planes (Part 1)

838 views / 1 likes - added 9 years ago

2010 IIT JEE Paper 1 #30 normal vector and planes (Part 1) More free lessons at: http://www.khanacademy.org/video?v=2u535-HVJ_o
08:05
IIT JEE Perpendicular Plane (part 2)

683 views / 0 likes - added 9 years ago

2010 IIT JEE Paper 1 #30 normal vector and planes (Part 2) More free lessons at: http://www.khanacademy.org/video?v=66pQLO--Ghk
04:13 Popular
Adults Stumped By Geometry Problems For 10 Year Olds. Can You Solve Them?

841 views / 0 likes - added 7 years ago

These homework problems were given to 10 year old children (Year 5) in England (Glossop, Derbyshire) and they were posted to Facebook when some adults found them to be difficult. One person claimed the problems were impossible to solve. Can you figure the
04:22
Learn to Draw Dotted Lines on a Chalkboard || Learn Quick

654 views / 0 likes - added 7 years ago

In this episode of Learn Quick I learn to draw lines on a chalk board like the great MIT lecturer Walter Lewin. Subscribe for more Learn Quick Videos: http://bit.ly/2bR4nIH If you enjoy this content and felt I've earned it, please consider pledging a litt
10:54
Non-Euclidean Geometry Explained - Hyperbolica Devlog #1

186 views / 0 likes - added 2 years ago

I present the easiest way to understand curved spaces, in both hyperbolic and spherical geometries. This is the first in a series about the development of Hyperbolica. Chapters: 0:00 Intro 0:24 Spherical Geometry 2:33 Hyperbolic Introduction 3:53 Projecti
09:50 Popular
Can You Solve This 6th Grade Geometry Problem From China?

1,261 views / 1 likes - added 7 years ago

What is the total area of the red spots? The diagram involves a rectangle with dimensions of 10 and 20. Inside the rectangle one of its diagonals is connected. There are two circles of equal size that are tangent to each other and the rectangle. The video
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02:52
Bauhaus Ballet: A Dance of Geometry

539 views / 1 likes - added 5 years ago

The Bauhaus Movement produced more than just minimalist buildings and furniture; it also gave way to a dance of geometry. In his 1922 “Triadic Ballet,” prodigious artist Oskar Schlemmer stripped away the genre’s archetypally fluid movements and fabrics, p
03:05 Popular
Equal Parts Of Circles And Rectangles | Geometry | Early Math | Khan Academy

1,363 views / 1 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-fractions-of-shapes/e/equal-parts-of-circles-and-rectangles?utm_source=YT&utm_medium=Desc&utm_campaign=Early
01:53 Popular
The Loud House | Leni's Best Lines | Nick

1,184 views / 3 likes - added 7 years ago

Leni Loud marches to the beat of her own strappy sandaled feet! Plus, she's got some of the best lines in The Loud House! So take a walk through life as she knows it and listen to what she's got to say - from lessons in gum chewing to her favorite color:
07:56 Popular
Art Core: Horizontal & Vertical Lines - How To Draw A Pizza Restaurant

1,648 views / 0 likes - added 4 years ago

Today, we're learning how to draw a really cool pizza parlor! We're also learning about vertical and horizontal lines. - #stayhome and draw #withmeJoin our monthly membership and download our app! You can watch our lessons in a safe distraction-free envir
03:16 Popular
Can You Solve This 8th Grade Geometry Problem? 75% Got The Wrong Answer

997 views / 0 likes - added 7 years ago

What is angle A in the star-shaped figure? This problem appeared on the 1999 AMC 8 test (intended for 8th grade students in the US). Approximately 75% of test-takers did not mark the correct response. Can you figure it out? Watch the video for a solution.
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Cousin Fal's Shape Collection | Geometry | Early Math | Khan Academy

692 views / 0 likes - added 8 years ago

Learn how to classify shapes based on their number of sides, number of corners, and side-lengths. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-shapes/e/n
05:57 Popular
Can You Solve This 6th Grade Geometry Problem From Singapore? The Area Of A "Claw"

1,124 views / 1 likes - added 7 years ago

This problem was given to Primary 6 (age 11-12) students in Singapore. What is the area of the shaded region in the video, which consists of the region bounded by 4 quarter circles in a 3x3 grid of squares, and each square has a side length of 4? The shad
04:13 Popular
Can You Solve This Grade 12 Geometry Problem From Australia? The Marshmallow Chocolate Puzzle

905 views / 0 likes - added 7 years ago

A marshmallow has the shape of a cylinder with diameter 5 and height 3. A dessert is made with 24 marshmallows: there are two stacked layers of marshmallows, and each layer has 3 rows of 4 marshmallows. The gaps between the marshmallows are filled with ch
04:33
Fractals: The Geometry of Chaos - Christmas Lectures with Ian Stewart

536 views / 0 likes - added 5 years ago

Using a simple set of mathematical rules, a very intricate geometry can be created in the form of fractals. The Sierpinski triangle is a famous example. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rig
03:43
Right Triangle Geometry — Harder Example | Math | New SAT | Khan Academy

614 views / 0 likes - added 8 years ago

Watch Sal work through a harder Right triangle geometry problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s4-easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed
08:17 Popular
Right Triangle Geometry — Basic Example | Math | New SAT | Khan Academy

924 views / 0 likes - added 8 years ago

Watch Sal work through a basic Right triangle geometry problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s7-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed
06:58
Who Carved These Mysterious Lines in the Desert?

126 views / 0 likes - added 1 year ago

The Nazca were an ancient group of farmers and fishermen that used desert plateaus as a canvas for giant geoglyphs. But some of these drawings pre-date the Nazca. Who created them and why? Follow on social for more NOVA content! Twitter: https://twitter.c
07:54 Popular
Math Antics - Points, Lines,&Planes

1,175 views / 0 likes - added 9 years ago

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
03:12
This Jello Simulation Uses Only ~88 Lines of Code

496 views / 0 likes - added 4 years ago

The paper "Moving Least Squares MPM with Compatible Particle-in-Cell" and its source code is available here:http://taichi.graphics/wp-content/uploads/2019/03/mls-mpm-cpic.pdfhttps://github.com/yuanming-hu/taichi_mpmThe Taichi framework: http://taichi.grap
16:47
Lines of Light: How Analog Television Works

670 views / 0 likes - added 4 years ago

You can support this channel on Patreon! Link belowHave you ever wondered how old-school television worked? It seems almost impossible for a device to make moving images without a computer being involved. Yet analog television is very, very old. How on Ea
01:55 Popular
The Loud House | Lucy's Best Lines | Nick

987 views / 3 likes - added 7 years ago

Behind Lucy Loud's long, dark bangs and spooky thoughts lurks the soul of a poet. You could say she puts the FUN in FUNERAL... if asking friends to play a corpse is your idea of a good time. Watch and experience LIFE the way Lucy does! Subscribe if you lo
03:59
Movie Geometry - Shaping the Way You Think

596 views / 0 likes - added 5 years ago

Shapes have meaning. That may sound crazy, but hear me out. Let's explore how cinematographers and directors create shapes inside the frame to add visual storytelling to their films. Twitter: http://bit.ly/1QvLI0H Patreon: http://bit.ly/1UaO9MU Music: htt
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Graphing Lines by Solving for Y and Plotting Points (TTP Video 30)

495 views / 0 likes - added 6 years ago

An extension of the previous video. Focus will be on development of more elegant graphing techniques.
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Transmission Lines - Signal Transmission and Reflection

334 views / 0 likes - added 5 years ago

Visualization of the voltages and currents for electrical signals along a transmission line. My Patreon page is at https://www.patreon.com/EugeneK
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Types of Angles, Figures & Shapes

1,507 views / 0 likes - added 5 years ago

Types of Angles, Figures & Shapes. Part of the series: Geometry Tips. many different types of angles, figures and shapes make up math in general as well as geometry. Learn about the types of angles, figures and shapes in geometry with help from a longtime
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Inclined Plane Force Components

700 views / 0 likes - added 9 years ago

Figuring out the components of the force due to gravity that are parallel and perpendicular to the surface of an inclined plane More free lessons at: http://www.khanacademy.org/video?v=TC23wD34C7k
02:25 Popular
What Forces Are Acting On You?

1,513 views / 1 likes - added 3 years ago

What forces (i.e. pushes or pulls) are acting on you right now? Most people can identify the gravitational force down, but there must be something else otherwise you would accelerate down towards the center of the Earth. The other main force on you is cal
09:52 Popular
Sand pendulums - Lissajous patterns // Homemade Science with Bruce Yeany

1,461 views / 0 likes - added 7 years ago

Sand pendulums are an easy and beautiful method for students of all ages to learn a bit about the harmonic motion. These devices are easy to build and can be adjusted to give a variety of patterns. A pendulum that begins with two point of support can alte
07:33 Popular
Introduction to Electric Fields

1,068 views / 0 likes - added 6 years ago

A simple and comprehensive introduction to electric fields. Covers the basics like the electric field of a charge, electric field lines and the electric field equation. Hi! I'm Jade. I make fun physics videos that will make you smarter while making you sm
How to Draw a Hole on Line Paper: Simple Trick Art

125 views / 1 likes - added 8 months ago

Learn How to Draw a Hole on Line Paper. Draw simple trick art, really easy anamorphic art, narrated. Subscribe for more of my art videos: http://www.youtube.com/circlelineartschoolCircle Line Art School: Episode 239How to Draw a Hole on Line Paper: Simple
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Visual Pythagorean Theorem Proof

778 views / 0 likes - added 9 years ago

Visual Pythagorean Theorem Proof - some basic geometry required
18:18
2003 AIME II Problem 14

590 views / 0 likes - added 9 years ago

Trigonometry and geometry to find the area of an equilateral (but not regular) hexagon More free lessons at: http://www.khanacademy.org/video?v=Ec-BKdC8vOo
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Jumping Wire

35 views / 0 likes - added 3 months ago

A current-carrying wire interacts with an external magnetic field. The direction of the force is perpendicular to both the current and the magnetic field. The battery is a 12 Volt gel cell. The wires have a total resistance of about 0.1 Ohms. The magnetic
06:59 Popular
How To Draw A Teddy Bear Holding A Heart

3,227 views / 4 likes - added 7 years ago

Valentine's day is coming up! Learn how to draw a cute teddy bear holding a heart! For this lesson, you'll also need a pencil. This is because we'll be drawing the heart with pencil lines first and then erasing some of the lines later. If you'd like, you
00:47
the circle dot trick

163 views / 0 likes - added 1 year ago

Can you figure out how to draw a circle without ever lifting your pen from the center dot and no lines in the middle?
03:34
How Sound Works (In Rooms)

440 views / 0 likes - added 4 years ago

Acoustic Geometry shows how sound works in rooms using Nerf Disc guns, 1130 feet of fluorescent green string, and Moiré patterns, and a before-and-after example.
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What Exactly is a Tesseract? (Hint: Not a Superhero Stone)

146 views / 0 likes - added 1 year ago

A tesseract is a 4D cube, i.e. a cube that exists in 4 dimensions. Although fans of the Marvel universe and superheroes may associate tesseract with the glowing blue box that houses the Space stone, a tesseract is a real geometrical concept that exists in
09:39 Popular
Distance Formula

752 views / 0 likes - added 9 years ago

How to find the distance between lines using the Pythagorean Formula More free lessons at: http://www.khanacademy.org/video?v=nyZuite17Pc
04:51
Artificial Intelligence is Helping Save This Small Town From its Toxic Nightmare

144 views / 0 likes - added 2 years ago

Benton Harbor needs to exhume thousands of corroded water service lines, and a machine learning algorithm is helping to figure out where to dig first.
05:22
This Might Shock You: Downed Power Line Safety

599 views / 1 likes - added 8 years ago

If you come across a downed power line, stay as far away from it as you can and call Puget Sound Energy at 1-888-225-5773. Assume it is live. Never touch a downed power line or anything near it. Do not drive over down power lines. Should a power line fall
02:43
The Man Teaching Math Lessons in the Sky

476 views / 0 likes - added 5 years ago

Winfred Randolph Lowe, aka, “Randy the Kite Man,” is a retired math teacher taking geometry to new heights. For the past 20 years, Winfred has spent his free time flying kites. Now he’s combining his two favorite pastimes to teach the fundamentals of geom
01:52 Popular
Visualization of the Coriolis and centrifugal forces

822 views / 0 likes - added 7 years ago

A visual demonstration of the effects of the Coriolis and Centrifugal forces. Visit my homepage, http://www.zutopedia.com/udia.html, or read about my latest book http://www.zutopedia.com This clip demonstrates the effects of the Coriolis and Centrifugal f
01:50
Introducing Amazon Go and the world’s most advanced shopping technology

579 views / 0 likes - added 7 years ago

Amazon Go is a new kind of store featuring the world’s most advanced shopping technology. No lines, no checkout – just grab and go! Learn more at http://amazon.com/go
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Handmade holograms are really weird

170 views / 0 likes - added 1 year ago

The first 100 people to use code SCIENCE at the link below willget 20% off of Incogni: https://incogni.com/scienceYou can make holograms just by etching lines into a shiny surface. All you need is a compass with two points (a divider). And to be able to g
01:21
MIT Robot Learns How to Play Jenga

502 views / 0 likes - added 5 years ago

Using machine-learning and sensory hardware, Alberto Rodriguez, assistant professor of mechanical engineering, and members of MIT's MCube lab have developed a robot that is learning how to play the game Jenga®. The technology could be used in robots f
14:27
Why is TV 29.97 frames per second?

644 views / 0 likes - added 7 years ago

I look at the historical quirks which gave us TV at 29.97 frames per second. In North America at least. It's a comfortable 25 fps in Europe. More on that thing I mentioned at the end of the video here: https://www.patreon.com/standupmaths Here is the sphe
09:25
How Many Dimensions Can You See?

437 views / 0 likes - added 6 years ago

Flatland and how many dimensions you can see (HINT: it's not 3!) Hi! I'm Jade. I make physics videos that will make you smarter while making you smile :) ***SUBSCRIBE*** https://www.youtube.com/c/upandatom ***Let's be friends*** TWITTER: https://twitter.c
07:37 Popular
Sand, light pendulums-Lissajous patterns-part two // Homemade Science with Bruce Yeany

733 views / 1 likes - added 7 years ago

Capturing the movement of pendulums using light and a camera can be an easy and beautiful method for students and adults to learn a bit about the harmonic motion. The movement of the light is captured by having the pendulum swing in a room that is complet
11:27 Popular
Can You Solve The Viral 11x11 = 4 Puzzle? The Correct Answer Explained

3,047 views / 1 likes - added 7 years ago

If 11x11=4 and 22x22=16, what is 33x33=? This puzzle has been shared with the claim that only geniuses can solve it. It has gotten millions of views on the internet and Facebook as people have debated the correct answer. In this video I present what many
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Pixar: The Math Behind The Movies - Tony DeRose

636 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/pixar-the-math-behind-the-movies-tony-derose The folks at Pixar are widely known as some of the world's best storytellers and animators. They are perhaps less recognized as some of the most innovative math whizz
03:55
Mosquito Wars

462 views / 0 likes - added 6 years ago

In Southeast Asia, some types of the malaria parasite develop resistance to the drug combinations used to cure and prevent the disease. If this drug resistance spread to Africa, it’d be a disaster. Fortunately, partners on the front lines are finding ways
04:44
How do the leading COVID-19 vaccines work?

263 views / 0 likes - added 3 years ago

As countries like the United States and United Kingdom inoculate their residents with never-before used vaccine technology, others, including Russia, China, and India, are investing in more traditional approaches, like inactivated coronavirus vaccines. Bu
05:11 Popular
How Optical Illusions Trick Your Brain

1,669 views / 7 likes - added 7 years ago

Things are not at all as they seem... What are the different types of optical illusions and why are our eyes tricking us? How The Human Eye Evolved To Be So Complex - http://bit.ly/2canNZ2 Sign Up For The Seeker Newsletter Here - http://bit.ly/1UO1PxI Rea
03:22 Popular
ballet rotoscope

807 views / 1 likes - added 6 years ago

This work is an experimental video created from a research about "Rotoscope" and “Computer Geometry”. Rotoscope is known as an traditional technique for creating animation invented in 1905 by Max Fleischer in which animators traced the actors
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Line Riders - Les Toreadors from Carmen | Georges Bizet

494 views / 4 likes - added 3 years ago

I've synchronized a Line Rider track to Les Toreadors from Carmen (by Georges Bizet). All lines were drawn by hand. Remounting is a newly implemented feature in Line Rider. If the rider and the sled reconvene in a precise way the character can grab back o
03:46 Popular
Five things you didn't know about the Moon

837 views / 3 likes - added 5 years ago

First photos of the Moon... EVER. Lunar volcanoes! (Yes, the Moon used to have active volcanoes.) The wheels NASA built for the first moon rover. Oh, did you know the Moon is moving away from us? And the Moon has over 400,000 pounds of Earth stuff on it (
04:53
We Taught an AI To Synthesize Materials | Two Minute Papers #251

651 views / 0 likes - added 6 years ago

The paper "Gaussian Material Synthesis" and its source code is available here: https://users.cg.tuwien.ac.at/zsolnai/gfx/gaussian-material-synthesis/ Our Patreon page: https://www.patreon.com/TwoMinutePapers We would like to thank our generous Patreon sup
06:11 Popular
Line Rider Race #2 - Who will survive Flight of the Valkyries?

871 views / 1 likes - added 1 year ago

I've synchronized The Flight of the Valkyries (by Richard Wagner) to 8 Line Riders racing down the track for victory. Choose your team color and cross your fingers. All lines were drawn by hand. My favorite color is green, so surely they'll win right? Or
03:12 Popular
10 Amazing Bets You Will Always Win - (Ep 12)

1,048 views / 3 likes - added 8 years ago

Follow @richardwiseman Music: https://cameronwattmusic.wordpress.com Download lines illusion: https://richardwiseman.files.wordpress.com/2014/10/bets12.pdf Apollo Robbins: http://www.istealstuff.com Alex Conran: http://www.alexisconran.com David Britland:
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01:18 Popular
Can You Make 4 Triangles From 6 Matches?

977 views / 0 likes - added 7 years ago

Can you use 6 matches to make 4 triangles of equal size and equal shape? This is harder than it sounds! Give it a try before watching the video for a solution. If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions
03:59 Popular
Why Do Honeybees Love Hexagons? - Zack Patterson And Andy Peterson

845 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-do-honeybees-love-hexagons-zack-patterson-and-andy-peterson Honeybees are some of nature's finest mathematicians. Not only can they calculate angles and comprehend the roundness of the earth, these smart ins
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The secrets of Einstein's unknown equation with Sean Carroll

47 views / 0 likes - added 4 months ago

Did you know that Einstein's most important equation isn't E=mc^2? Find out all about his equation that expresses how spacetime curves, with Sean Carroll.Buy Sean's book here: https://geni.us/AIAOUHnYouTube channel members can watch the Q&A for this lectu
04:22 Popular
Impossible Algebra Problem

1,237 views / 0 likes - added 7 years ago

This problem is making the rounds. Can you place numbers in the four boxes so all the equations are true? Blog post (text/image explanation): http://wp.me/p6aMk-4up If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecis
03:25 Popular
Can You Solve This? AA + BB + CC = ABC

2,476 views / 0 likes - added 7 years ago

If AA + BB + CC = ABC, what are the values of A, B, and C? All the digits are distinct and positive. Watch the video for a solution. Blog (text explanation): http://wp.me/p6aMk-4Cm If you like my videos, you can support me at Patreon: http://www.patreon.c
20:02 Popular
Can We Eat To Starve Cancer? - William Li

703 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/can-we-eat-to-starve-cancer-william-li William Li presents a new way to think about treating cancer and other diseases: anti-angiogenesis, preventing the growth of blood vessels that feed a tumor. The crucial fi
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How Warren Buffett Tried To Trick Bill Gates In A Dice Game

684 views / 0 likes - added 7 years ago

Warren Buffett once challenged Bill Gates to a dice game similar to this one. How would you play the game? Blog post (text explanation) http://wp.me/p6aMk-4ro Source The dice numbers and the story are described at Microsoft Research's website for non-tran
00:53
The first electric generator#Shorts

219 views / 1 likes - added 2 years ago

On 17 and 18 October 1831, Michael Faraday developed the first-ever electric generator. Watch the demo: as the magnet moves, the lines of magnetic force repeatedly intersect with the wire, exciting the electrons in the wire and generating electrical curre
21:19
The Mandelbrot Set - The only video you need to see!

469 views / 0 likes - added 3 years ago

This video has been edited together from several documentaries to describe the Mandelbrot set in a simple, introduction/beginner fashion! What is the Mandelbrot set? An incredible mathematical formula explaining fractals and geometry! Several mathematicia
Flame Tests of Metals

146 views / 0 likes - added 2 years ago

Qualitative demonstration of how salts of various metalssodium, lithium, potassium, calcium, strontium, barium, and copperemit characteristic colors when burned in a flame. We can analyze the component colors by placing a 500 lines/cm diffraction film in
01:57 Popular
I Will Read Your Mind - Math Magic Trick

1,250 views / 2 likes - added 7 years ago

Pick a 2 digit number. Got it? Now and add up the digits. Subtract that from your original number. Look up the resulting number in the table. Can I figure out the symbol you are looking at? This video predicts your symbol and explains why this math trick
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05:57
How To Split A Cake Fairly Using Math

689 views / 0 likes - added 7 years ago

How can 2 people split up a cake, knowing that each person wants to get a larger piece than the other? What about 3 people, or even N people? This is an example of a fair division problem from game theory. There are many cake-cutting algorithms to produce
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06:24 Popular
The Seemingly Impossible Escape Logic Puzzle

1,449 views / 0 likes - added 7 years ago

An evil logician takes Alice and Bob captive. They have a chance to escape if they can deduce the total number of trees in the prison. Can they figure it out? Source of puzzle wu: riddles forum https://www.ocf.berkeley.edu/~wwu/cgi-bin/yabb/YaBB.cgi?board
04:52 Popular
Can You Solve The Two Rope Puzzle?

708 views / 0 likes - added 7 years ago

You have two ropes and a lighter. Each rope burns in 60 minutes, but the ropes do not burn at a constant rate. How can you measure 45 minutes by burning the ropes? Some of you might have heard this problem before. If so, try this variation: how can you me
15:31 Popular
24 AMAZING OPTICAL ILLUSIONS That Will Trick Your Eyes!

770 views / 0 likes - added 2 years ago

Hi Everyone :) Welcome back! Buy physicsfun toys on : https://bit.ly/2MOjFET This video contains many interesting / satisfying /innovative science Illusion / physics Illusion. If you guys liked this video please follow us on Instagram : https://www.instag
06:24 Popular
Can You Solve The Chameleon Riddle?

1,004 views / 0 likes - added 7 years ago

A museum has 13 blue, 15 red, and 17 green chameleons. Whenever two chameleons of different colors meet, they both change into the color of the other chameleon (if blue and red met, for example, they would both turn green). As the chameleons mingle, is it
07:52 Popular
Find The 10 Digit Number Classic Puzzle And Solution

883 views / 0 likes - added 7 years ago

I'm thinking of a 10 digit number that uses the each digit 0 to 9 exactly once and where the number formed by the first n digits is divisible by n. What could my number be? The video explains how to find the answer using tests for divisibility. Blog post:
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1, 2, 3, 4 Stories About Math

383 views / 0 likes - added 4 years ago

From geometry to personal finance, there is one common denominator that links the stories in this reelthey are all about math.SUBSCRIBE: https://goo.gl/vR6AcbThis story is a part of our Human Condition series. Come along and let us connect you to some of
10:20 Popular
SURPRISING Coin Flipping Probability - Flips To HH Versus HT

875 views / 0 likes - added 7 years ago

What is the expected number of coin flips until you get two heads in a row (HH)? What is the expected number of coin flips until you get a heads followed by a tails (HT)? The video presents the solution and an intuitive explanation for this probability ri
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TOUGH Interview Question - Ways To Give 11 Coins To 3 People

606 views / 0 likes - added 7 years ago

How many ways can you divide 11 coins to 3 people? How many ways are there if each person has to get at least 1 coin? This puzzle is an example of a technical interview question. The video demonstrates the solution, which indicates the number of non-negat
10:14
How to Measure Flow with Magnets - (Magnetic Flow Meters)

639 views / 0 likes - added 6 years ago

What happens when a civil engineer mixes water and electricity? The results aren't always ideal, but you always learn something! A magnetic flow meter relies on Faraday's Law of Induction to measure the flow of a fluid. Magnets outside the pipe create a m
06:59
Curvature Demonstrated + Comments | Space Time | PBS Digital Studios

472 views / 0 likes - added 8 years ago

Want to ask some sort of crazy question about Space?: Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Let us know what topics you want to le
02:57 Popular
Viral Facebook Math Problem

1,288 views / 1 likes - added 7 years ago

This problem has over 2 million comments on Facebook and is getting coverage in mainstream media and blogs. Can you figure out this Facebook fruit algebra puzzle involving apples, bananas, and coconuts? The video presents what many people consider to be t
10:03
Four has Four Letters

451 views / 0 likes - added 7 years ago

Four is the only number in the English language which as as many letters as its value. Leave your findings below and please do comment (constructively!) on the findings of others. Here is the python code I used to track which binary sequences ended in 13
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How do Hard Disk Drives Work?

151 views / 0 likes - added 1 year ago

Check out https://www.pcbway.com/ for all kinds of PCBs, easy ordering, and quick delivery. Take a look at their PCB Assembly, for populating the components on your PCBs. Have you ever wondered how Hard Disk Drives can store billions of bits of data withi
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Can You Solve The 3 Cards Riddle?

677 views / 0 likes - added 7 years ago

There are 3 cards in this problem. One card is blue on both sides, another is red on both sides, and the last is red on one side and blue on the other. The cards are put in a bag and I pick one at random. Without looking at the colors on the card, I place
03:31 Popular
How Logical Are You? The Irrationality Illusion Tricks Most

802 views / 0 likes - added 7 years ago

This video relates a cognitive bias ("irrational" decision) to an optical illusion (picture at 1:45). For more, check out my new book, "The Irrationality Illusion: How to Make Smart Decisions And Overcome Bias" http://amzn.to/1o3FaAg Blog post (text and i
01:01 Popular
You can ride this zip line like a rollercoaster

756 views / 0 likes - added 6 years ago

Each of these "rollercoaster" zip lines is custom-built to fit the landscape around them. Unlike normal roller coasters, these rides run on gravity and momentum, making them very eco-friendly. Read more: http://www.businessinsider.com/sai FACEBOOK: https:
05:38 Popular
Decimals As Words | Decimals | 4th Grade | Khan Academy

1,393 views / 0 likes - added 8 years ago

Learn how to describe decimals in words. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimals-intro/e/decimals-in-words?utm_source=YT&utm_medium=Desc&utm_campaign
02:45 Popular
The Day After Tomorrow Is Yesterday Riddle. Can You Solve It?

703 views / 0 likes - added 7 years ago

This puzzle is popular on Facebook and many other sites. "When the day after tomorrow is yesterday, then today will be as far from Wednesday as today was from Wednesday when the day before yesterday was tomorrow. What day is today?" Can you solve this tri
03:01
Scooby-Doo! | "And I Would Have Gotten Away With It" SUPERCUT! | WB Kids

254 views / 0 likes - added 2 years ago

Join Scooby-Doo for a supercut celebration of one of the most iconic recurring lines in cartoon history!WB Kids is the home of all of your favorite clips featuring characters from the Looney Tunes, Scooby-Doo, Tom and Jerry and More!#WBKids #KidsCartoons
03:29 Popular
Comparing Decimals Example 1 | Decimals | 4th Grade | Khan Academy

1,490 views / 1 likes - added 8 years ago

Learn how to compare decimals with tenths and hundredths. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-compare-decimals/e/comparing_decimals_1?utm_source=YT&utm_me
02:23
This SAT Math Question Has A Mistake

664 views / 0 likes - added 7 years ago

This question appeared on the October 1980 SAT exam. Like all questions, it was supposed to have exactly one correct answer. However the test-makers made a mistake. Can you figure out what they did wrong? Blog post (text explanation): http://wp.me/p6aMk-4
03:40 Popular
Comparing Decimals Visually Example | 4th Grade | Khan Academy

975 views / 0 likes - added 8 years ago

Learn how to compare decimals using grid diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-compare-decimals-visually/e/comparing-decimals-visually?utm_source=
02:32 Popular
Comparing Fractions Visually With Pies | Fractions | 4th Grade | Khan Academy

1,040 views / 0 likes - added 8 years ago

Comparing fractions visually with pies Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-comparing-fractions-visually/e/visually-comparing-fractions?utm_source=Y
03:33 Popular
Can You Solve This Intelligence Test? Viral Facebook Puzzle

739 views / 0 likes - added 7 years ago

If 6 + 4 = 210, and 9 + 2 = 711, what is the rule to combine numbers? This "intelligence test" has been shared more than 3 million times on Facebook. On Twitter people claim solving it means you have an IQ of more than 150 (genius level). In this video I
05:09 Popular
Can You Solve The Snake Eyes Probability Riddle?

838 views / 0 likes - added 7 years ago

You close your eyes and roll a pair of dice. The casino dealer announces that at least one of the rolls is showing a 1.What is the probability that both dice are showing a 1? Watch the video for the solution. (Snake eyes is a term for rolling a pair of 1s
02:55 Popular
Comparing Fractions On A Number Line | Fractions | 4th Grade | Khan Academy

1,444 views / 0 likes - added 8 years ago

Comparing fractions on a number line Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-comparing-fractions-visually/e/visually-comparing-fractions?utm_source=YT&
04:08 Popular
Plotting Decimal Numbers On A Number Line (examples) | Khan Academy

908 views / 0 likes - added 8 years ago

Learn how to find decimals with hundredths on a number line. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimals-number-line/e/decimals_on_the_number_line_2?utm_
06:57
When Is Christmas? Mentally Convert Date To Day Of The Week

529 views / 0 likes - added 7 years ago

January 1, 2016 is a Friday. When will Christmas be in 2016? What about Christmas in 2055? You can do this in your head! Blog post (text explanation): http://wp.me/p6aMk-4qQ Doomsday Rule (previous video): https://www.youtube.com/watch?v=UsStBxY9STw Calcu
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Drawing with a GLASS PEN | INK ONLY | No Pencil Sketch

513 views / 0 likes - added 4 years ago

Glass pens are they a serious tool for an artist or just one of many gimmicks?I do hope you'll enjoy today's video and find it entertaining, tackling Piccolo, one of the most difficult characters in Dragonball to draw. So many details, no guide lines to h
05:50
Kinacoustic | 10,000 Objects Create Howl's Moving Castle Theme

480 views / 0 likes - added 5 years ago

Composed by Joe Hisaishi Arranged by E. Davis/ Kyle Landry About 10,000 musical objects were used to create Howl's Moving Castle Theme About 6 minutes long and used about 6000 lines, the hardest song I've ever made! Bring you an another song from Studio G
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Decimal Intuition With Grids (examples) | Decimals | 4th Grade | Khan Academy

1,251 views / 0 likes - added 8 years ago

Deepen your understanding of decimal numbers by thinking about grid diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimals-intro/e/decimal-intuition-with-
00:52
This automatic shopping basket could revolutionize the way you buy groceries

514 views / 0 likes - added 7 years ago

How much time do you waste waiting in line in the grocery store? A company in Japan is testing a new kind of shopping basket — called the Regi-Robo — with hopes that it will eliminate long checkout lines. Read more: http://www.businessinsider.com/sai FACE
06:55 Popular
Place Value For Decimals Greater Than One (examples) | 4th Grade | Khan Academy

1,165 views / 1 likes - added 8 years ago

Understand decimal numbers that are greater than 1. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimals-greater-than-one/e/decimals-greater-than-one-intuition?ut
04:37 Popular
Fraction-decimal Intuition Problems (examples) | 4th Grade | Khan Academy

1,031 views / 0 likes - added 8 years ago

Understand the connection between decimals and fractions using a grid diagram. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimal-fractions/e/fraction-decimal-in
07:40 Popular
Comparing Numbers Represented In Different Ways | 4th Grade | Khan Academy

745 views / 0 likes - added 8 years ago

Examples of Khan Academy practice problems where you compare decimals, fractions, and number diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-compare-decimal
02:35 Popular
Comparing Fractions Visually With A Bar | Fractions | 4th Grade | Khan Academy

1,103 views / 0 likes - added 8 years ago

Learn how to compare fractions with unlike denominators by drawing bars Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-comparing-fractions-visually/e/visually
12:12
Why Some of the Rainbow is Missing

30 views / 0 likes - added 2 months ago

Were on PATREON! Join the community: https://www.patreon.com/itsokaytobesmart More info and sources below Over 200 years ago, scientists were looking at sunlight through a prism when they noticed that part of the rainbow was missing. There were dark lines
05:39 Popular
Can You Solve A 5th Grade Problem From China? Find The Area Of ABCD

788 views / 0 likes - added 5 years ago

Thanks to Eric from Miami for suggesting this problem and sending a solution! The diagram shows a quadrilateral ABCD with the values for some angles and the length of AB. Can you figure out the area of ABCD? Subscribe: https://www.youtube.com/user/MindYou
04:11 Popular
Decomposing Hundredths Into Tenths And Hundredths | 4th Grade | Khan Academy

1,476 views / 0 likes - added 8 years ago

Learn how to decompose a fraction into tenths and hundredths. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/decompose-fractions-with
05:55 Popular
"Impossible" Logic Puzzle - How Many Liars Are At The Party?

807 views / 0 likes - added 7 years ago

A party has 100 people who are either liars are truth tellers. Liars always lie and truth tellers always say the truth. After the party you ask each person, "How many truth tellers did you shake hands with?" Each person gives a different answer from 0 to
03:28 Popular
Flower Math Problem - Adults Stumped By Question For Kids In China

1,387 views / 2 likes - added 7 years ago

This problem is said to come from a test given to a Chinese kindergarten class (5 year olds). It was posted online and caused a lot of debate as adults were stumped about the correct answer, some saying it is impossible. Can you figure it out? This video
15:15
Moving Faster Than The Speed Of Light? Special Relativity Velocity Addition Formula

682 views / 0 likes - added 7 years ago

If train A is moving towards train B, and each train moves at 75% the speed of light (relative to the ground), will an observer on train A think that train B is moving at 150% the speed of light? But nothing moves faster than the speed of light, so what i
04:53 Popular
Can You Solve The Friendship Riddle?

1,298 views / 0 likes - added 7 years ago

In a group of 6 people, you might find that some people are friends on Facebook, or you might find out that no one is friends on Facebook. Show that there is always a group of 3 people in which either: (a) all 3 people are mutual friends or (b) the 3 peop
02:40
Line Riders - Blue Danube

605 views / 1 likes - added 5 years ago

I have hand drawn a line rider track with multiple riders to synchronize with "The Blue Danube" by Johann Strauss. Subscribe to join me on my quest to make visualizations for all music that has none. Any time a character leaves the screen they are being d
01:47 Popular
Decompose Hundredths On Number Line | Fractions | 4th Grade | Khan Academy

1,573 views / 0 likes - added 8 years ago

Learn how to decompose a fraction with hundredths on a number line. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/decompose-fraction
04:23
How To Draw A Turtle - Preschool

521 views / 0 likes - added 3 years ago

This lesson is meant for younger artists but it's still fun for everyone! Follow along with us and learn how to draw a turtle using simple shapes and lines. JOIN OUR ART HUB MEMBERSHIP! VISIT https://www.artforkidshub.tv/ VISIT OUR AMAZON ART SUPPLY STORE
01:49 Popular
This Matchstick Puzzle Is

853 views / 1 likes - added 7 years ago

This classic matchstick/toothpick puzzle is making the rounds because it is supposedly "extremely hard" for adults. Can you make 3 squares by moving 3 matchsticks? You cannot break any of the sticks, the resulting squares must be of equal size, and each t
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06:06 Popular
Equivalent Fractions And Different Wholes | Fractions | 4th Grade | Khan Academy

807 views / 0 likes - added 8 years ago

Learn how two fractions are equivalent only if they refer to the same whole. For example, 1/2 of a small circle is not the same as 1/2 of a big circle. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-
07:49 Popular
Can You Solve The Viral 9 = 72 Puzzle? The Correct Answer Explained

1,073 views / 0 likes - added 7 years ago

This problem has been shared millions of times on Twitter/Facebook with the claim "99% fail" to solve it and that only a genius could find the correct answer. If 9 = 72, 8 = 56, 7 = 42, 6 = 30, 5 = 20, then 3 = ? In this video I explain what many people b
10:53 Popular
Top 10 Ancient Relics So Advanced They Shouldn't Exist

1,027 views / 0 likes - added 6 years ago

Some ancient artifacts and relics are so advanced, we can't place them in history... they shouldn't exist! The origins and purpose of artifacts are still disputed. Subscribe for more! ► https://goo.gl/pgcoq1 ◄ Stay updated ► https://goo.gl/JyGcTt https://
06:01 Popular
Can You Solve The Viral 1 + 4 = 5 Puzzle? The Correct Answer Explained

11.8k views / 1 likes - added 7 years ago

This problem was shared on Facebook with the claim that only one in a thousand could figure it out. It went viral and generated over 3 million comments. Here is the problem. If 1 + 4 = 5, 2 + 5 = 12, 3 + 6 = 21, what is 8 + 11 = ? This video presents what
02:43 Popular
Why Do Men Have Nipples?

823 views / 0 likes - added 8 years ago

Men don’t usually lactate – but they can! Cristen explores how breast tissue develops in human embryos of both sexes, and explains why mice are more advanced, evolution-wise. Check out Cristen's article at HowStuffWorks.com: http://health.howstuffworks.co
04:20 Popular
Visually Converting From Tenths To Hundredths | 4th Grade | Khan Academy

1,185 views / 0 likes - added 8 years ago

Learn how to convert fractions from tenths to hundredths using grid diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/equivale
04:16
Subvisual Subway: The Art Of New York City's Bacterial World

665 views / 0 likes - added 8 years ago

Typographer and illustrator Craig Ward heard an urban legend that "using the handrails on the subway is like shaking hands with 100 people." He decided to test that theory by sampling the bacteria on subway lines around New York City and photographing his
07:25 Popular
Can You Solve The Race To December 31 Riddle?

713 views / 0 likes - added 7 years ago

Here's a fun game you can play with another person. The game starts on January 1. Each of two players takes turns calling out another date. The new date has to be a later date in the year with either the same month OR the same day (from January 1, a playe
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What Is The Shape of Space?

452 views / 0 likes - added 6 years ago

A collaboration with Jorge Cham and Daniel Whiteson, check out "We Have No Idea" at http://www.wehavenoidea.com Jorge's PhDComics: http://www.phdcomics.com Numberphile video about sports in hyperbolic space: https://www.youtube.com/watch?v=u6Got0X41pY Sup
03:21 Popular
Can You Solve A Puzzle That Fooled Richard Feynman?

706 views / 0 likes - added 5 years ago

What is the radius of the circle, in simplest terms involving a, b, and c? I read that even the great mind Richard Feynman made a mistake. Watch the video to learn the common mistake and what the correct answer is. Source Feynman story http://web.media.mi
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What Is The Area? "You Should Be Able To Solve This"

505 views / 0 likes - added 5 years ago

Thanks to Reio in Romania for emailing me this fun problem! What is the area? This puzzle was shared with the tagline "you should be able to solve this." Solution to 5th grade Chinese challenge problem https://youtu.be/OuJQaxZvlYs My blog post for this vi
13:40 Popular
BEST Way To Play Memory (Card Game) - WIN Using Math

948 views / 0 likes - added 7 years ago

The card game of memory (aka concentration) is a children's game to test visual recall. Strategically you can figure out the best move by doing probability calculations. This video explains the best possible way to play the game mathematically. You can le
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03:17
Can YOU Solve It? This Question Stumped 75% Of PhD Economists

604 views / 0 likes - added 7 years ago

Introductory economics courses cover the concept of an opportunity cost. Can you figure out the opportunity cost for the problem in the video? This video presents a question that surprisingly more than 75% of PhD economists did not answer correctly. Paper
01:38
Why jets leave white trails in the sky

477 views / 0 likes - added 6 years ago

The atmosphere is thin and cold the higher up a plane goes. The exhaust from a plane's engine is much hotter than the atmosphere. The water vapor from the hot plane engine turns to ice mid-air which we see as white lines in the sky called contrails. Read
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The Infinite Pattern That Never Repeats

564 views / 0 likes - added 3 years ago

Simples rules of geometry meant that 5-fold symmetry was impossible as were crystals without a periodic structure. This turns out to be wrong. Thanks to LastPass for sponsoring a portion of this video. Click here to start using LastPass: https://ve42.co/L
09:11 Popular
Can You Solve The Rectangle Ratio Puzzle? The Surprising Answer

850 views / 0 likes - added 7 years ago

Start with a unit square (a rectangle with both sides equal to 1, call it R1). Attach a rectangle of area 1 to its right side, then attach a rectangle of area 1 to its top. The border of this new shape is another rectangle, call it R2. We can repeat the p
03:48 Popular
Can You Solve This Harvard Admissions Question? Algebra Problem, 1869

1,464 views / 0 likes - added 7 years ago

The Harvard admissions exam in 1869 included this algebra problem: "A man bought a watch, a chain, and a locket for $216. The watch and locket together cost three times as much as the chain, and the chain and locket together cost half as much as the watch
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Can You Solve The Missing Sock Puzzle?

614 views / 0 likes - added 7 years ago

A statistician keeps a simple wardrobe. He only purchases pairs of black socks and white socks, and he keeps all of the socks in a pile in the drawer. Recently one of the socks was lost in the laundry. The socks have a mathematical property. If you select
02:51 Popular
The Horse Horseshoe Boots Viral Algebra Problem - The Correct Answer Explained

1,721 views / 2 likes - added 7 years ago

A lot of people are arguing over the correct answer to this algebra problem involving horses, horseshoes, and boots. A Facebook post with this problem has over 500,000 comments. Can you figure it out? In this video I explain the correct answer. Blog post:
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Can You Solve The Red Ball Lottery Puzzle?

668 views / 0 likes - added 7 years ago

(Same video without the music: https://youtu.be/sz5oLEpc8xE) This problem involves 100 red balls, 100 blue balls, and 2 urns. First you distribute all the balls between the 2 urns, placing at least 1 ball in each urn. Next, you select an urn at random, an
07:21 Popular
Can You Solve The Magical Pond Puzzle?

1,030 views / 1 likes - added 7 years ago

(Same video with music: https://youtu.be/nF-Gpk0ZpRk) You visit a shrine that has 3 temples. Before each temple, you have to swim in a magical pond. Your path is pond-temple1-pond-temple2-pond-temple 3. Each time you swim, the pond magically triples the n
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The rise and fall of the Berlin Wall - Konrad H. Jarausch

672 views / 1 likes - added 6 years ago

Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/the-rise-and-fall-of-the-berlin-wall-konrad-h-jarausch On August 13, 1961, construction workers began tearing up streets and erecting barriers in Berlin
02:37 Popular
Adults Stumped By Maths Questions For 15 Year Olds. Can You Solve Them?

791 views / 0 likes - added 7 years ago

How hard are math tests? A survey asked 2,000 UK adults to answer sample GCSE test questions intended for 15 year old students. On average, the survey questions were missed by about 40% of adults. Can you solve them? The video presents 2 questions that ma
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Can You Solve The Marriage Logic Problem? 80% Fail

674 views / 0 likes - added 7 years ago

Surveys have found 80 percent get this logic problem wrong. Alice is looking at Bob, and Bob is looking at Charlie. Alice is married; Charlie is not. Is a married person looking at an unmarried person? Answer choices are A) Yes, B) No, and C) Cannot be de
05:33 Popular
What is 6÷2(1+2) = ? The Correct Answer Explained

879 views / 0 likes - added 7 years ago

What is 6÷2(1+2) = ? This problem went viral and generated millions of comments on Facebook, Twitter, YouTube and social media sites. I explain how to get the correct answer by using the modern interpretation of the order of operations. I also explain how
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02:57 Popular
Can You Solve This Crazy Equation? Ramanujan's Radical Brain Teaser

1,093 views / 0 likes - added 7 years ago

In 1911, Srinivasa Ramanujan posed this problem involving an infinite nested radical (a never-ending expression that has square roots inside of square roots). Can you figure out how to simplify the equation? The video presents an intuitive solution. Techn
03:54 Popular
What's The Best Soup Can Size? The Optimal Cylinder Puzzle

795 views / 0 likes - added 7 years ago

A cylindrical can with volume V can be made in different ways. The cylinder can be wide and short (large radius and small height), or it can be narrower and taller (small radius and larger height). Which shape uses the least material? That is, which can h
03:19 Popular
Machine Pours Concrete Perfectly

737 views / 0 likes - added 5 years ago

The 5700-C machine by PowerCurber pours concrete into perfect shapes and lines. The machine is designed to make curbs, gutters, sidewalks, and barrier walls. If conditions are good, the device can pour as much as 1,000 linear feet per hour. See more from
07:40 Popular
Can You Solve The 21 Flags Game From Survivor?

884 views / 1 likes - added 7 years ago

Contestants on the TV show "Survivor" faced off in a series of challenges for a grand prize of $1 million. Most of the challenges were physical like hiking many miles or diving underwater. But one challenge was mathematical. The game had 21 flags and cont
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A Hole in a Hole in a Hole - Numberphile

511 views / 0 likes - added 7 years ago

Audible: http://www.audible.com/numberphile Cliff's glassware: http://bit.ly/ACME_Klein Extras for this video: https://youtu.be/6Qpfv5y-7WU More Cliff: http://bit.ly/Cliff_Videos Cliff references A Comprehensive Introduction to Differential Geometry by Mi
08:51 Popular
The Viral Balloon Puzzle - The REAL Answer Explained (Using Ph.D. Level Math)

765 views / 0 likes - added 5 years ago

They say only geniuses can solve this puzzle, and this time they are correct. Thanks to all patrons! Special thanks to: Shrihari Puranik Yildiz Kabaran Kyle My blog post for this video https://wp.me/p6aMk-82U Sources https://puzzling.stackexchange.com/que
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Conveyor Belt Can Move Packages In Any Direction

540 views / 0 likes - added 5 years ago

Celluveyor is an omnidirectional conveyor belt that consists of small hexagonal cells capable of moving products in any direction. Operators set a product's course by using special software installed on a tablet. The conveyor belt is most suited for smart
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Can You Solve The "MEANEST" SAT Test Question Ever?

698 views / 0 likes - added 5 years ago

On the SAT exam, you have about 2 minutes to read and solve each math question. This one about averages can send you in a loop, unless you approach it systematically. In the video I also explain a shortcut to help you solve this type of problem quickly. S
02:06 Popular
Can You Solve The Viral Matchstick Puzzle 6 + 4 = 4?

3,470 views / 0 likes - added 7 years ago

Can you fix 6 + 4 = 4 by moving 1 matchstick? This problem has gone viral on Facebook, with one post having over 400,000 shares. The ground rules are you cannot break a stick, it should be an equality (=), and you have to use 7-segment numbers (the block
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Chitty Chitty Bang Bang (1968) - Music Box Dance Scene (10/12) | Movieclips

614 views / 0 likes - added 4 years ago

Chitty Chitty Bang Bang - Music Box Dance: Potts (Dick Van Dyke) and Truly (Sally Ann Howes) sing and dance for the Baron (Gert Frobe) and Baroness (Anna Quayle) dressed as dolls in order to get behind enemy lines. BUY THE MOVIE: https://www.fandangonow.c
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How One Line in the Oldest Math Text Hinted at Hidden Universes

107 views / 0 likes - added 7 months ago

Discover strange new universes that turn up at the core of Einsteins General Relativity. Head to https://brilliant.org/veritasium to start your free 30-day trial, and the first 200 people get 20% off an annual premium subscription.If youre looking for a m
#MetKidsWeave on a Mini Loom

176 views / 0 likes - added 2 years ago

Follow along and learn how to weave yarn on a mini cardboard loom. Materials: cardboard ruler pencil scissors yarn tape needle (a large plastic embroidery needle works well) Instructions: Make Your Loom1. Measure and mark two borders that are 1/2 inch (1.
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The Dot Game That Breaks Your Brain

440 views / 0 likes - added 3 years ago

On Tuesday, February 21, 1967, in the math department common room of Sidney Sussex College, Cambridge, the world of pencil and paper math games changed. John Conway and Michael Paterson were trying to invent a brand new simple-to-play, hard-to-analyze gam
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The Adventures of Spot | Story Time | Highlights High Five

37 views / 0 likes - added 4 months ago

Join us as we read Highlights High Five magazine. Find out what the Timbertoes are up to in The Adventures of Spot. Then look for the different types of lines in Making a Map. Our associate editor Allision Kane ends storytime with, Panio Practice. There i
04:44 Popular
LONG DISTANCE PAPER PLANE - Let's Mame A Paper Airplane That Flies Over 100 Feet | Super Jupiter

11.8k views / 24 likes - added 8 years ago

Paper Airplane Instruction / How to make a paper planeHow to make a paper airplane that flies / Cómo hacer un Avión de Papel / Máy Bay Giấy / Uçak Yap Kağıt कागजी हवाई जहाज ट्यूटोरियल / 紙飛行機の作り方 ► Subscribe Main Channel: http://goo.gl/wAFe3s ◄ ► Subscribe
09:32 Popular
Wrong Numbers

732 views / 3 likes - added 4 years ago

new phone who dis?Order my book https://theodd1sout.com/collections/odd-1s-out-store/products/the-odd-1s-out-book-non-signed-paperback-copyjacksepticeye (Thanks for doing lines!) https://www.youtube.com/user/jacksepticeyeAdditional artists: Rushlight Inva
06:18 Popular
Can You Solve The Diluted Wine Puzzle?

760 views / 1 likes - added 7 years ago

A servant has a method to steal wine. He removes 3 cups from a barrel of wine and replaces it with 3 cups of water. The next day he wants more wine, so he does the same thing: he removes 3 cups from the same barrel (now with diluted wine) and replaces it
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Let's Play With Matches #shorts

159 views / 0 likes - added 1 year ago

With just 8 matches (or pens or q-tips or anything straight), you can tie up your mind for hours, days, or WEEKS. The idea is to develop a basic understanding of graph theory, which focuses on the relationships between things -- and you can express those

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