Math

09:13 Popular
Math Antics - Subtracting Mixed Numbers

6 years ago / 1,037 views

Learn More at mathantics.com Visit http://www.mathantics.com for Free math videos and additional subscription based content!
02:27 Popular
Inequality Word Problem: One Variable | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

8 years ago / 1,036 views

This time we're creating a variable to represent a number, and then writing an inequality. We're building on our knowledge. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-to
02:32 Popular
Comparing Fractions Visually With Pies | Fractions | 4th Grade | Khan Academy

8 years ago / 1,033 views

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
05:25 Popular
Complex Numbers — Harder Example | Math | New SAT | Khan Academy

8 years ago / 1,031 views

Watch Sal work through a harder Complex numbers problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-tips-planning/new-sat-about-sat/v/walk-through-sat-practice-platform?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Mi
01:02 Popular
Integers : Arranging Integers From Smallest To Largest On Number Line

8 years ago / 1,030 views

Integers : Arranging Integers from Smallest to Largest on Number Line. Here we look at arranging some integers from smallest to largest on a number line.
01:59 Popular
Graphing Inequalities on a Number Line

5 years ago / 1,030 views

When graphing inequalities on a number line, the number line should have 0 in the center and negative numbers on the left side, with positive numbers on the right. Graph inequalities, such as X is greater than 2, with tips from a math teacher in this free
11:52 Popular
158,962,555,217,826,360,000 (Enigma Machine) - Numberphile

5 years ago / 1,030 views

The Nazi's Enigma Machine - and the mathematics behind it - was a crucial part of World War II. Flaw video at: http://www.youtube.com/watch?v=V4V2bpZlqx8 More links & stuff in full description below ↓↓↓ Brown papers on ebay: bit.ly/brow
02:48 Popular
Adding In Binary | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

8 years ago / 1,029 views

Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/binary-multiplication?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/
02:11 Popular
Ratios, Rates, And Proportions — Basic Example | Math | New SAT | Khan Academy

8 years ago / 1,028 views

Watch Sal work through a basic Ratios, rates, and proportions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-problem-solving-data-analysis/v/sat-math-q1-harder?utm_source=YT&utm_medium=Desc&utm_campaign=
04:37 Popular
Fraction-decimal Intuition Problems (examples) | 4th Grade | Khan Academy

8 years ago / 1,027 views

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
01:22 Popular
Table Data — Basic Example | Math | New SAT | Khan Academy

8 years ago / 1,027 views

Watch Sal work through a basic Table data problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-problem-solving-data-analysis/v/sat-math-q7-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the pr
03:05 Popular
Simplifying Complex Fractions - Ex 1

8 years ago / 1,026 views

Complex number worksheet with detailed solutions made by me! http://www.teacherspayteachers.com/Product/Complex-Numbers-Adding-Subtracting-Multiplying-Dividing Simplifying Complex Fractions - Ex 1 In this video, I simplify a complex fraction by getting co
03:47 Popular
A Trip Through Space To Calculate Distance - Heather Tunnell

8 years ago / 1,026 views

View full lesson: http://ed.ted.com/lessons/a-trip-through-space-to-calculate-distance-heather-tunnell Imagine two aliens racing across outer space to their moon. Who can we deem the fastest alien? With DIRT -- or the equation Distance = Rate x Time -- we
02:36 Popular
Number Patterns: Seeing Relationships | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

8 years ago / 1,026 views

Laying the foundation for algebraic thinking by learning to recognize the relationships between patterns and graphing out those relationships. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applyin
05:48 Popular
How Does a Real-Life Escherian Staircase Work?

3 years ago / 1,025 views

In this video I show you a 3d printed infinite staircase also called an Escherian staircase after M.C Escher. I talk about how this staircase can actually be possible in Nil space using non-euclidean geometry. Ascending in Nil Video: https://www.youtube.c
02:41 Popular
How to Substitute Known or Given Values for the Variables in an Algebraic Expression

5 years ago / 1,024 views

Substituting known or given values for a variable is required to complete some types of operations. Learn how to substitute known or given values for a variable with help from a mathematics tutor and educator in this free video clip.
05:09 Popular
Can you solve the alien probe riddle? - Dan Finkel

5 years ago / 1,024 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to Bonus Riddle: https://brilliant.org/TedEd3ColorCube/ Your team has developed a probe to study an alien monolith. It needs protective coatings — in red, purple or green — to cope wit
03:59 Popular
Volume Word Problems — Basic Example | Math | New SAT | Khan Academy

8 years ago / 1,021 views

Watch Sal work through a basic Volume word problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s1-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the previous
02:03 Popular
Comparing Numbers Of Objects | Counting | Early Math | Khan Academy

8 years ago / 1,020 views

Learn what "more than" and "less than" mean. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-comparing-numbers/e/compare-groups-through-10?utm_source=YT&utm
09:04 Popular
Math Antics - Adding Mixed Numbers

6 years ago / 1,020 views

Learn More at mathantics.com Visit http://www.mathantics.com for Free math videos and additional subscription based content!
05:15 Popular
Can you solve the Ragnarok riddle? - Dan Finkel

3 years ago / 1,020 views

Practice more problem-solving at https://brilliant.org/TedEd/--Ragnarok: The fabled end of the world, when giants, monsters, and Norse gods battle for the future. The gods were winning until the great serpent Jrmungandr emerged. It swallowed Valhalla and
21:35 Popular
How To Integrate Using U-Substitution

2 years ago / 1,020 views

This calculus video tutorial provides a basic introduction into u-substitution. It explains how to integrate using u-substitution. You need to determine which part of the function to set equal to the u variable and you to find the derivative of u to get d
02:44 Popular
Domain And Range For Piecewise Constant Function

8 years ago / 1,019 views

Domain and Range for piecewise constant function
02:36 Popular
Understanding Place Value When Adding Ones | Early Math | Khan Academy

8 years ago / 1,019 views

Learn how to add 37 + 2 by thinking about place value. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-ones-tens/e/add-within-100--level-1?utm_source=YT&ut
07:21 Popular
Can You Solve The Magical Pond Puzzle?

7 years ago / 1,018 views

(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
01:50 Popular
A mathematician explains infinity

7 years ago / 1,016 views

Infinity is an elusive concept that can often be difficult to comprehend. In order to better define what infinity actually is, we brought in Eugenia Cheng, a mathematician and the author of "Beyond Infinity." Read more: http://www.businessinsider.com/sai
Featured
03:53 Popular
Congruent and Similar Triangles

9 years ago / 1,012 views

u07_l1_t3_we2 Congruent and Similar Triangles Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
03:45 Popular
Angles, Arc Lengths, And Trig Functions — Harder Example | Math | New SAT | Khan Academy

8 years ago / 1,012 views

Watch Sal work through a harder Angles, arc lengths, and trig functions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s5-easier?utm_source=YT&utm_medium=Desc&utm_campai
05:26 Popular
Can you solve the wizard standoff riddle? - Dan Finkel

5 years ago / 1,012 views

Practice more problem-solving at https://brilliant.org/TedEd/ Sign up for free to receive the solution to the bonus riddle! You’ve been chosen as a champion to represent your wizarding house in a deadly duel against two rival magic schools. Your opponents
02:50 Popular
Complex Numbers — Basic Example | Math | New SAT | Khan Academy

8 years ago / 1,011 views

Watch Sal work through a basic Complex numbers problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s3-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the prev
09:11 Popular
The Shape Of DNA - Numberphile

8 years ago / 1,010 views

The amazing knots, twists and turns inside our cells. This is Part One of DNA Topology featuring Professor Mariel Vazquez from UC Davis. Part Two: Coming Soon Videos by Brady Haran Editing and animation in this video by Pete McPartlan NUMBERPHILE Website:
02:37 Popular
Absolute Value Equations 1

9 years ago / 1,007 views

U02_L2_T2_we1 : Absolute Value Equations 1 More free lessons at: http://www.khanacademy.org/video?v=GwjiR2_7A7Y Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
10:16 Popular
Combinations

9 years ago / 1,006 views

Introduction to combinations More free lessons at: http://www.khanacademy.org/video?v=bCxMhncR7PU
03:59 Popular
How to Easily Memorize the Multiplication Table I The Great Courses

7 years ago / 1,005 views

Most of us, when faced with math problems like these, immediately reach for a calculator or a pen. But imagine if you could perform these and other seemingly difficult—but surprisingly easy—calculations right in your head. Seems like an imposs
Featured
03:27 Popular
How To Evaluate Expressions In Two Variables With Decimals And Fractions | 6th Grade | Khan Academy

8 years ago / 1,003 views

Learn how to evaluate expressions that have two different variables in them by using a technique called substitution (or "plugging in"). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6t
01:40 Popular
How To Match Function Input To Output Given The Formula (example) | Algebra I | Khan Academy

8 years ago / 1,003 views

Sal finds the input value for which f(t)=13, given that f(t)=-2t+5. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/function-inputs-and-outputs/e/functions_matching_inputs_outputs?utm_
05:59 Popular
Introduction To Place Value | Place Value (tens And Hundreds) | Early Math | Khan Academy

8 years ago / 1,003 views

Learn why we use a "ones place" and a "tens place" when writing numbers. This video uses the number 37 as an example. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-place-value-topic/c
06:32 Popular
Examples Analyzing Clusters, Gaps, Peaks And Outliers For Distributions

8 years ago / 1,001 views

Examples analyzing clusters, gaps, peaks and outliers for distributions
01:46 Popular
Movie Ticket Proportionality | 7th Grade | Khan Academy

8 years ago / 1,001 views

When going to the movies, is the price you pay proportional to the number of tickets you buy? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-proportional-re
05:17 Popular
Math Antics - Fractions Are Parts

9 years ago / 1,000 views

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
02:54 Popular
Meet the Inventor of the Rubik’s Cube

6 years ago / 1,000 views

Since the 1980s, the Rubik’s Cube has captivated the minds of puzzle solvers around the globe. But how did one of the world’s most addictive and prolific puzzles come to be? It all began in the beautiful city of Budapest, in the beautiful mind of Ernő Rub
Featured
09:40 Popular
Quadratic And Exponential Word Problems — Harder Example | Math | New SAT | Khan Academy

8 years ago / 999 views

Watch Sal work through a harder Quadratic and exponential word problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p2-easier?utm_source=YT&utm_medium=Desc&utm_campaign
04:55 Popular
You will NOT know all of these sounds, I am SURE!! (with answers)

6 years ago / 996 views

★★ For more sound broccolies like this... Subscribe to DB! ★★ You will NOT know all of these sounds, I am SURE!! I would be incredibly surprised if anyone actually identifies all of these animal sounds... This is a listening test to see how well you know
02:15 Popular
How to Add Square Roots to Numerator Fractions

5 years ago / 995 views

How to Add Square Roots to Numerator Fractions. Part of the series: Math Problems. Adding square root numerator fractions requires you to keep the terms in the problem separate. Add square root numerator fractions with help from a mathematics educator in
14:27 Popular
All the Numbers - Numberphile

5 years ago / 994 views

Matt Parker talks about numbers - as he often does. His book "Humble Pi" is at: http://bit.ly/Humble_Pi More links & stuff in full description below ↓↓↓ The book on Amazon: https://amzn.to/2NKposg Numberphile podcast is on your podcast player. Or the webs
07:33 Popular
Equally sharing a cake between three people - Numberphile

6 years ago / 993 views

Audible (30-day trial, free audio book): https://www.audible.com/numberphile More links & stuff in full description below ↓↓↓ This video features Dr Hannah Fry. More videos with Hannah: http://bit.ly/hannah_vids Hannah's website: http:/
02:52 Popular
Linear Algebra: (correction) scalar muliplication of row

9 years ago / 989 views

Correction of last video showing that the determinant when one row is multiplied by a scalar is equal to the scalar times the determinant More free lessons at: http://www.khanacademy.org/video?v=WY6QG0mZ7uQ
06:24 Popular
Can You Solve The Chameleon Riddle?

7 years ago / 989 views

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
03:56 Popular
Proving The Opposite Angles Of Inscribed Quadrilateral Are Supplementary

8 years ago / 988 views

Proving the opposite angles of inscribed quadrilateral are supplementary
03:16 Popular
Can You Solve This 8th Grade Geometry Problem? 75% Got The Wrong Answer

7 years ago / 988 views

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.
14:01 Popular
How to build a Hexastix in 72 easy steps

7 years ago / 987 views

I was bored in a hotel room, so I went and bought 72 pencils. You can buy the same pencils on Amazon here: https://www.amazon.com/Staples-Yellow-Pencils-Dozen/dp/B00BQ3ALD6?_encoding=UTF8&tag=stanupmath-20 Download the Stand-up Maths theme! https://standu
02:34 Popular
Adding Two-digit Numbers Without Regrouping | Early Math | Khan Academy

8 years ago / 986 views

Learn to add 23 + 45 thinking about place value. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-subtract-100/e/addition_3?utm_source=YT&utm_medium=Desc&ut
04:01 Popular
Product rule - Calculus derivatives tutorial

6 years ago / 986 views

Learn how to take the derivative of a function using the product rule. This complete calculus derivatives tutorial explains why and how to use the product rule. To see all my calculus videos check out my website http://MathMeeting.com My name is Chris and
05:18 Popular
Can you solve the rebel supplies riddle? - Alex Gendler

5 years ago / 986 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to Bonus Riddle: https://brilliant.org/tededmislabelledboxes/ You’re overseeing the delivery of supplies to a rebel base in the heart of enemy territory. To get past customs, all packa
06:08 Popular
Converting Between Explicit And Recursive Function Definitions For Arithmetic Sequence

8 years ago / 984 views

Converting between explicit and recursive function definitions for arithmetic sequence
04:13 Popular
Can You Solve The Temple Riddle? - Dennis E. Shasha

8 years ago / 983 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-temple-riddle-dennis-e-shasha Your expedition finally stands at the heart of the ancient temple. But as you study the inscriptions in the darkness, two wisps of green smoke burst forth. The wal
02:45 Popular
Understanding Place Value While Subtracting Ones | Early Math | Khan Academy

8 years ago / 982 views

Learn how to subtract 4 from 46 by thinking about place value. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-sub-ones-tens/e/subtract-with-in-100-level-1?utm
19:37 Popular
Smart Math Techniques - Solve maths problems in seconds

6 years ago / 982 views

Topic In this topic our expert trainer Shruti explains how to solve difficult maths problems in a matter of seconds. OBJECTIVE To enable you to to do faster calculation using best speed maths techniques and make you score more in your exams. These speed m
05:08 Popular
Can you solve the Leonardo da Vinci riddle? - Tanya Khovanova

5 years ago / 982 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to Bonus Riddle: https://brilliant.org/tededautobiographical/ You’ve found Leonardo da Vinci’s secret vault, secured by a series of combination locks. Fortunately, your treasure map ha
11:50 Popular
The Golden Angle - Christmas Lectures with Ian Stewart

5 years ago / 980 views

Thr golden angle is a mathematical concept, closely related to the golden ratio and Fibonacci numbers. Where can you find it and how is it formed? Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/
02:17 Popular
Pieces Of Fruit | Basic Addition And Subtraction | Early Math | Khan Academy

8 years ago / 979 views

Learn how to add fruit (by putting fruit together) and sutract fruit (by taking fruit away). Examples used are 5+3 and 5-3. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basic
04:28 Popular
Product rule - Logarithm derivatives example

6 years ago / 978 views

Learn calculus with this product rule Derivative example with logarithms and exponential functions. This complete calculus derivatives tutorial explains why and how to use the product rule. To see all my calculus videos check out my website http://MathMee
09:18 Popular
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35...

8 years ago / 977 views

Watch my FIELD DAY video, “Home Sweet Whittier”: http://bit.ly/1QKKcuo And subscribe to FIELD DAY!! http://www.youtube.com/fieldday Jake and Kevin will be doing field days soon!! LINKS, SOURCES, and MORE are below: This video was shot in beautiful Buchare
04:01 Popular
The simple riddle that 50% of Harvard students get wrong

7 years ago / 977 views

Sources for scientific journals are provided below. New videos come out every Thursday so subscribe for more videos. Visit my Facebook page for more bite sized tips and psychology information https://www.facebook.com/BiteSizePsych Also, if you like the mu
Featured
03:51 Popular
Subtracting Mixed Numbers With Regrouping

8 years ago / 976 views

Subtracting mixed numbers with regrouping
48:59 Popular
Area Between Two Curves

2 years ago / 976 views

This calculus video tutorial provides a basic introduction in finding the area between two curves with respect to y and with respect to x. It explains how to set up the definite integral to calculate the area of the shaded region bounded by the two curves
04:37 Popular
Can We Mathematically Prove Aliens Exist?

7 years ago / 973 views

What is our probability of finding aliens and how close are we to encountering them?? The answer lies somewhere in these 2 equations. Could Life On Earth Have Come From A Comet? - http://bit.ly/2aXZC0a Sign Up For The Seeker Newsletter Here - http://bit.l
10:22 Popular
Why do whole oranges float, but peeled oranges sink?

5 years ago / 973 views

Go check out the courses on Brilliant! https://brilliant.org/standupmaths Be one of the first n people (for n = 200) to sign-up for a free Brilliant account and get 20% off if you upgrade to paid membership. Here is the original QI tweet: "A whole orange
03:24 Popular
Schoolhouse Rock: Multiplication - My Hero, Zero Music Video

8 years ago / 972 views

"Zero, my hero, how wonderful you are!" Classic Schoolhouse Rock. For more information, go to www.DisneyEducation.com.
03:40 Popular
Comparing Decimals Visually Example | 4th Grade | Khan Academy

8 years ago / 972 views

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=
10:12 Popular
21-card trick - Numberphile

5 years ago / 972 views

A simple trick with some neat math behind it. More on Numberphile cards at: http://www.bradyharanblog.com/numberphile-playing-cards More links & stuff in full description below ↓↓↓ More cards video: http://bit.ly/Cards_Shuffling This vi
04:58 Popular
Number Grid | Counting | Early Math | Khan Academy

8 years ago / 970 views

In our introductory video to counting, Sal goes through all the numbers from 0 to 100, so we can start to see some interesting patterns. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-
05:23 Popular
Adding And Subtracting Multiple Fractions With Unlike Denominators

8 years ago / 969 views

Adding and subtracting multiple fractions with unlike denominators
Featured
01:18 Popular
Can You Make 4 Triangles From 6 Matches?

7 years ago / 969 views

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
13:17 Popular
Probability that at least 2 people in a room of 30 share the same birthday | Probability and Statist

6 years ago / 969 views

The probability that at least 2 people in a room of 30 share the same birthday. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/probability-and-combinatorics-topic/probability_combinatorics/e/probab
02:44 Popular
Area of a Trapezoid

9 years ago / 968 views

u07_l2_t2_we2 Area of a Trapezoid
06:35 Popular
Bisecting Yin And Yang - Brain Teaser

8 years ago / 966 views

Can you bisect yin and yang using a straight line? Find the solution to this brain teaser in this video. I also have a bunch of other fun brain teasers as well. Heaven and hell - Brain Teaser https://www.youtube.com/watch?v=YOgKI0HWCnA Two burning ropes -
06:05 Popular
Math Antics - Multi-Digit Multiplication Pt 1

9 years ago / 965 views

Learn More at mathantics.comVisit http://www.mathantics.com for more Free math videos and additional subscription based content!
Featured
07:19 Popular
Reflecting Segments Over Line | Transformations | Geometry | Khan Academy

8 years ago / 965 views

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
06:42 Popular
Math Antics - Types of Fractions

9 years ago / 962 views

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
04:25 Popular
Multiplying Challenging Decimals | Decimals | Pre-Algebra | Khan Academy

8 years ago / 960 views

Sometimes multiplying really small decimals (with all those zeros!) can be a little intimidating. Watch as we show you a handy trick to simplify these problems and solve them. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanaca
12:02 Popular
Trig Review for Physics - Common Math Tools - Physics 101, AP Physics 1 Review with Physics Girl

3 years ago / 960 views

Creator/Host/Writer: Dianna CowernProducer: Laura ChernikoffHead Writer: Jeff BrockResearcher/Writer: Sophia ChenEditor: Levi ButnerExercises in this video: Problem 1: 1. You are running north-east at a speed of 4 m/s. What component of your velocity is n
15:00 Popular
2010 IIT JEE Paper 1 Problem 50 Hyperbola Eccentricity

9 years ago / 958 views
06:59 Popular
Math Antics - Converting Base-10 Fractions

9 years ago / 958 views

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
00:59 Popular
Average Height Of A Building's Floor | Multiplication And Division | 3th Grade | Khan Academy

8 years ago / 957 views

Learn how to use the Khan Academy number line widget. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-third-grade-math/cc-3rd-fractions-topic/cc-3rd-fractions-on-the-number-line/e/fractions_on_the_number_lin
01:52 Popular
How to Solve a Rubik's Cube | Full-Time Kid | PBS Parents

7 years ago / 957 views

Watch Mya [unofficially] break the world record for solving a Rubik's cube, blind-folded! You won't REALLY learn how to solve the puzzle , but you'll learn a neat trick to show your friends and family. Executive Producer: Danielle Steinberg Meet Mya! She'
02:13 Popular
Crazy Math Trick: I will guess Your Age! (2017 with answers)

6 years ago / 957 views

★★ For more broccolies like this... Subscribe to DB! ★★ I will guess your age! This is a crazy math trick that is likely to impress you and your friends too! You start with a RANDOM number and then end up with your Age and that number... pretty incredible
05:13 Popular
Can you solve the rogue AI riddle? - Dan Finkel

5 years ago / 957 views

Practice more problem-solving at https://brilliant.org/TedEd/ If you sign up for a FREE membership using the link above, Brilliant will email you the solution to the BONUS RIDDLE. A hostile artificial intelligence called NIM has taken over the world’s com
1:01:57 Popular
100 EPIC SCHOOL HACKS YOU SHOULD KNOW

5 years ago / 957 views

Do you love school? I surely did! Whatever your answer is, the coming Live stream will be dedicated to hacks to make your school-time easier and more pleasant! Join Live chat! Subscribe to 5-Minute MAGIC: http://bit.ly/2ldditZ 5-Minute Crafts: https://www
05:27 Popular
9 Tricky Puzzles That Will Totally Blow Your Brain

6 years ago / 954 views

Once you show children’s puzzles toadults, most ofthem immediately get abrain freeze. Try to stretch your brain alittle and check ifyou can cope with questions from children’s books! Subscribe to Bright Side : https://goo.gl/rQTJZz -----------
03:49 Popular
How folding paper can get you to the moon - Adrian Paenza

8 years ago / 950 views

View full lesson: http://ed.ted.com/lessons/how-folding-paper-can-get-you-to-the-moon Can folding a piece of paper 45 times get you to the moon? By seeing what happens when folding just one piece of paper, we see the unbelievable potential of exponential
Featured
04:46 Popular
Rubik Cube In 2 Dimensions

8 years ago / 949 views

The Rubik (or Rubik's) Cube is a popular toy. Deane shows how to make a 2 Dimensional version of the famous puzzle. You will need to start with a small square plastic or cardboard box. SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=Curi
22:07 Popular
The Odd Number Rule

3 years ago / 946 views

Subscribe to our Curiosity Box! https://www.curiositybox.comLearn more about our new Inquisitive Fellowship: https://www.curiositybox.com/pages/inquisitivefellowshipfollow me:https://twitter.com/tweetsaucehttps://www.instagram.com/electricpantsBuddy the d
05:19 Popular
Riddles: 5 "easy"... & one IMPOSSIBLE! (with answers)

6 years ago / 945 views

★★★★ Riddles and more... Subscribe to Daily Broccoli! ★★★★ This is a fun video with 5 supposedly "easy" riddles with answers, and one impossible question. I love these riddles, because they are clever and in fact not all that difficult. But still I wasn't
05:27 Popular
Can You Solve The Mind-Bending Self-Counting Sentence Riddle?

7 years ago / 944 views

"In this sentence, the number of occurrences of the digit 0 is __, of the digit 1 is __, of the digit 2 is __, of the digit 3 is __, of the digit 4 is __, of the digit 5 is __, of the digit 6 is __, of the digit 7 is __, of the digit 8 is __, and of the d
12:16 Popular
Neural Networks: Crash Course Statistics #41

4 years ago / 944 views

Today we're going to talk big picture about what Neural Networks are and how they work. Neural Networks, which are computer models that act like neurons in the human brain, are really popular right now - they're being used in everything from self-driving
07:51 Popular
How To Solve One-step Multiplication And Division Equations With Fractions And Decimals

8 years ago / 943 views

"Learn how to solve equations in one step by multiplying or dividing a number from both sides. These problems involve decimals and fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/
03:19 Popular
Heaven And Hell - Brain Teaser

8 years ago / 942 views

Fun brain teaser in which you have to choose between two doors. One of the doors leads to heaven and the other door leads to hell. You are allowed to ask the guards one question. What is one question that would guarantee certainty of choosing the door to
13:40 Popular
BEST Way To Play Memory (Card Game) - WIN Using Math

7 years ago / 942 views

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
Featured
05:53 Popular
Quantum Eraser Lottery Challenge | Space Time | PBS Digital Studios

7 years ago / 942 views

Matt challenges you to use quantum physics to win the lottery. Are you up to the task? Previous Episode on Quantum Eraser https://www.youtube.com/watch?v=8ORLN_KwAgs Get your own Space Time tshirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Faceb
04:52 Popular
Can you solve the killer robo-ants riddle? - Dan Finkel

5 years ago / 941 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to Bonus Riddle: https://brilliant.org/TedEdRoboAnts/ The good news is that your experimental robo-ants are a success. The bad news is that you accidentally gave them the ability to sh
03:09 Popular
How To Write Basic Algebraic Expressions From Word Problems | 6th Grade | Khan Academy

8 years ago / 940 views

Learn how to write basic expressions with variables to describe situations described in word problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th
01:16 Popular
Solving Quadratic Equations — Basic Example | Math | New SAT | Khan Academy

8 years ago / 940 views

Watch Sal work through a basic Solving quadratic equations problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p5-harder?utm_source=YT&utm_medium=Desc&utm_campaign=New
10:57 Popular
Math Antics - Measuring Distance

3 years ago / 940 views

Fortunately we had filmed this episode before the COVID-19 lockdowns. It's taken us a while to do the editing, but we hope you all like it!Learn More at mathantics.comVisit http://www.mathantics.com for more Free math videos and additional subscription ba
02:06 Popular
Relating Addition And Subtraction | Basic Addition And Subtraction | Early Math | Khan Academy

8 years ago / 937 views

See the relationship between 2+3=5, 5-2=3, and 5-3=2. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-add-subtract-10/e/relate-addition-and-subtraction?utm_
03:51 Popular
Can You Solve This MIT Admissions Question? Geometry Problem, 1869

7 years ago / 933 views

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
02:53 Popular
More Word Problems | Addition And Subtraction Within 100 | Early Math | Khan Academy

8 years ago / 932 views

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-more-fewer-100/e/addition-and-subtraction-word-problems-within-100--level-3?utm_source=YT&utm_medium=Desc&utm_c
04:53 Popular
What's The Difference Between Accuracy And Precision? - Matt Anticole

9 years ago / 931 views

View full lesson: http://ed.ted.com/lessons/what-s-the-difference-between-accuracy-and-precision-matt-anticole When we measure things, most people are only worried about how accurate, or how...
Featured
05:02 Popular
Population Pyramids: Powerful Predictors Of The Future - Kim Preshoff

8 years ago / 931 views

View full lesson: http://ed.ted.com/lessons/population-pyramids-powerful-predictors-of-the-future-kim-preshoff Population statistics are like crystal balls -- when examined closely, they can help predict a country's future (and give important clues about
02:37 Popular
Understanding Place Value When Subtracting Tens | Early Math | Khan Academy

8 years ago / 931 views

Learn how to subtract 40 from 65 by thinking about place value. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-sub-ones-tens/e/subtract-with-in-100-level-1?ut
05:07 Popular
Math Antics - Common Denominator ECD

9 years ago / 930 views

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
Featured
01:07 Popular
The Easiest Brain Teaser You Might Get Wrong

7 years ago / 930 views

Try and solve the easiest brain teaser you might get wrong. The chicken costs $1.00 more than the egg, and together they cost a total of $1.06. How much does the egg cost? My name is Chris and my passion is to teach math. Learning should never be a strugg
04:32 Popular
Pythagorean Theorem 1

9 years ago / 928 views

U07_L2_T1_we1 Pythagorean Theorem 1 More free lessons at: http://www.khanacademy.org/video?v=JVrkLIcA2qw Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
10:25 Popular
ck12.org Normal Distribution Problems: Empirical Rule

9 years ago / 928 views

Using the empirical rule (or 68-95-99.7 rule) to estimate probabilities for normal distributions More free lessons at: http://www.khanacademy.org/video?v=OhRr26AfFBU
03:37 Popular
Adding Hundreds, Tens, And Ones | Addition And Subtraction Within 100 | Early Math | Khan Academy

8 years ago / 928 views

Learn how to add three-digit numbers by adding ones, tens, and hundreds. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-ones-tens-hundreds/e/add-within-10
11:09 Popular
15 GENIUS MATH TRICKS THAT ARE ACTUALLY EASY

6 years ago / 927 views

How to embarrass your teacher. Smart and simple backs to school math hacks and tricks. Learn how to multiply fast in your head. Subscribe to 5-Minute Crafts KIDS: https://goo.gl/PEuLVt ----------------------------------------------------------------------
03:04 Popular
Finding Square Root Of Decimal

9 years ago / 926 views

Finding square root of decimal
03:55 Popular
Interpreting Function Graphs Word Problems

8 years ago / 926 views

Interpreting function graphs word problems
05:27 Popular
Factoring Polynomial To Find Rectangle Dimensions

8 years ago / 926 views
04:22 Popular
Ratios, Rates, And Proportions — Harder Example | Math | New SAT | Khan Academy

8 years ago / 925 views

Watch Sal work through a harder Ratios, rates, and proportions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-problem-solving-data-analysis/v/sat-math-q2-easier?utm_source=YT&utm_medium=Desc&utm_campaign
06:55 Popular
Median And Range Puzzle

9 years ago / 924 views

Median and range puzzle
13:54 Popular
Kakeya's Needle Problem - Numberphile

8 years ago / 924 views

The famed Kakeya Needle Problem, discussed by Charles Fefferman from Princeton University. Edit and animation by Pete McPartlan Film and interview by Brady Haran 17-gon: https://youtu.be/87uo2TPrsl8 NUMBERPHILE Website: http://www.numberphile.com/ Numberp
01:51 Popular
Crossing The River - Brain Teaser

8 years ago / 923 views

Try to solve this fun brain teaser. Cross the river with all of the zombies and humans. The boat can only fit two at a time. Also there can never be more zombies than humans. My name is Chris and my passion is to teach math. Learning should never be a str
12:36 Popular
Lin Alg: Alternate Basis Tranformation Matrix Example Part 2

9 years ago / 922 views

Showing that the transformation matrix with respect to basis B actually works. Brief point on why someone would want to operate in a different basis to begin with. More free lessons at: http://www.khanacademy.org/video?v=EyORbCPUAd4
05:50 Popular
Length Word Problems | Measurement And Data | Early Math | Khan Academy

8 years ago / 922 views

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-length-word-problems/e/length-word-problems?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch t
08:17 Popular
Right Triangle Geometry — Basic Example | Math | New SAT | Khan Academy

8 years ago / 921 views

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
03:40 Popular
Can Math Save You from Quicksand? | NUMBER CRUSHERS

5 years ago / 921 views

Can Math Save You from Quicksand? Can you think on your feet fast enough to solve this math puzzler? Will Jon wake up before the Zombie strikes? Will Gary sink into quicksand before his friend can save him? Take a guess or do the math to know what happens
02:28 Popular
Simplifying Rates and Ratios

9 years ago / 920 views

U04_L1_T1_we2 Simplifying Rates and Ratios More free lessons at: http://www.khanacademy.org/video?v=p5nomPfUF9k Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
05:13 Popular
Can You Solve

8 years ago / 920 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-einstein-s-riddle-dan-van-der-vieren View all the clues here: http://ed.ted.com/lessons/can-you-solve-einstein-s-riddle-dan-van-der-vieren#digdeeper Before he turned physics upside down, a young Al
04:35 Popular
Can you solve the counterfeit coin riddle? - Jennifer Lu

7 years ago / 919 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-counterfeit-coin-riddle-jennifer-lu You’re the realm’s greatest mathematician, but ever since you criticized the Emperor’s tax laws, you’ve been locked in the dungeon. Luckily for you, one of t
Featured
16:55 Popular
Calculating π by hand: the Chudnovsky algorithm

5 years ago / 919 views

For Pi Day 2018 I calculated π by hand using the Chudnovsky algorithm. https://en.wikipedia.org/wiki/Chudnovsky_algorithm k = 0 42698672/13591409 = 3.141592|751... k = 0 and k = 1 42698670.666333435968/13591408.9999997446 = 3.14159265358979|619... Watch m
06:16 Popular
Why Nature Loves Hexagons (featuring Infinite Series!)

6 years ago / 917 views

Follow me to Infinite Series for 4-Dimensional Bees! https://youtu.be/X8jOxEGVyPo Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ From spirals to spots to fractals, nature is full of interesting pattern
Featured
16:55 Popular
Linear Algebra: Determinant when row is added

9 years ago / 915 views

The determinant when one matrix has a row that is the sum of the rows of other matrices (and every other term is identical in the 3 matrices) More free lessons at: http://www.khanacademy.org/video?v=VrB3LaSD_uo
03:23 Popular
Comparison Word Problems | Addition And Subtraction Within 20 | Early Math | Khan Academy

8 years ago / 915 views

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-20/cc-early-math-word-problems-more-fewer-20/e/addition-and-subtraction-word-problems-within-20--level-3?utm_source=YT&utm_medium
01:27 Popular
The Easiest Brain Teaser that will rack your brain

7 years ago / 915 views

This is the easiest brain teaser that will rack your brain. 5 people can build 5 houses in 5 days. How long will it take 100 people to build 100 houses? My name is Chris and my passion is to teach math. Learning should never be a struggle which is why I m
07:07 Popular
How fast is a Fidget Spinner?

6 years ago / 914 views

Use some mathematics to work out how fast a Fidget Spinner spins. In fidgets/second. Maths and science teachers: please do torment your students with this experiment. All they need is a Fidget Spinner and a phone; the two things they refuse to be without.
Featured
02:03 Popular
The Adding by 2 Song (Math Facts) - Addition Song for Kids | Silly School Songs

3 years ago / 913 views

Learning to add by 2 is easy when you add this fun and catchy rhythm! For more music and information, visit http://sillyschoolsongs.comLyrics:Come on, let's add by 2Come on, let's add by 2This is something you can totally doCome on y'all, let's add by 2!2
14:34 Popular
Hypothesis Testing - One Tailed 't' Disribution

8 years ago / 912 views

Learn how to perform hypothesis testing with this easy to follow statistics video. I also provided the links for my other statistics videos as well Hypothesis testing - 2 tailed test https://www.youtube.com/watch?v=0XXT3bIY_pw Hypothesis testing - proport
16:51 Popular
Euclid's Big Problem - Numberphile

8 years ago / 911 views

Trisecting angles and calculating cube roots was a big problem for Euclid and his cohorts. Discussed by Zsuzsanna Dancso at MSRI. TRISECT WITH ORIGAMI: http://youtu.be/SL2lYcggGpc CIRCLE THE SQUARE: http://youtu.be/CMP9a2J4Bqw NUMBERPHILE Website: http://
01:58 Popular
Counting In Order | Counting | Early Math | Khan Academy

8 years ago / 910 views

Learn how to count without making mistakes. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-counting/e/counting-objects?utm_source=YT&utm_medium=Desc&utm_ca
06:02 Popular
Math, When Are You Going To Use It?

6 years ago / 910 views

If you're in or went to high school, you're familiar with the phrase "When am I ever going to use this?" when talking about pretty much anything you learn in math class. This is the answer to that question. The real answer, not something like "one day a s
14:31 Popular
Math Antics - Telling Time

3 years ago / 910 views

Learn More at mathantics.comVisit http://www.mathantics.com for more Free math videos and additional subscription based content!
02:08 Popular
Subtraction / Subtracting Integers - Word Problem

8 years ago / 909 views

Subtraction / Subtracting Integers - Word Problem. Here I look at a little word problem dealing with adding and subtracting integers.
03:29 Popular
Mind blowing brain teaser - Folding paper to the moon

7 years ago / 909 views

Can you solve this mind blowing brain teaser? How many times can you fold a piece a paper before it reaches the moon? Find out the solution in this brain teaser in this video. My name is Chris and my passion is to teach math. Learning should never be a st
13:00 Popular
Hypothesis Testing - Proportion Example

8 years ago / 907 views

Learn how to perform hypothesis testing with this easy to follow statistics video. I also provided the links for my other statistics videos as well Hypothesis testing - 2 tailed test https://www.youtube.com/watch?v=0XXT3bIY_pw Hypothesis testing - one tai
17:04 Popular
Chi Square Test - With Contingency Table

8 years ago / 906 views

Learn how to perform a Chi Square Test with this easy to follow statistics video. I also provided the links for my other statistics videos as well. Chi Square Test - "rolling dice" example https://www.youtube.com/watch?v=1Ldl5Zfcm1Y Hypothesis testing - t
08:41 Popular
Math in the Simpsons: Homer's theorem

5 years ago / 905 views

After putting on some glasses he found in a toilet Homer feels very smart and declares: "The sum of the square root of any two sides of an iscosceles triangle is equal to the square root of the remaining side." Well, sounds like Pythagoras theorem but it'
02:35 Popular
Counting Pot And Flower Scenarios

9 years ago / 904 views

Counting pot and flower scenarios
03:04 Popular
How To Create A Function From An Equation (example) | Functions | Algebra I | Khan Academy

8 years ago / 904 views

Sal find the formula of a function that, given an input value "b," outputs a value "a" that satisfies the equation 4a+7b=-52. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/functions-
12:09 Popular
The Math Behind Basketball's Wildest Moves | Rajiv Maheswaran | TED Talks

8 years ago / 901 views

Basketball is a fast-moving game of improvisation, contact and, ahem, spatio-temporal pattern recognition. Rajiv Maheswaran and his colleagues are analyzing the movements behind the key plays of the game, to help coaches and players combine intuition with
Featured
04:08 Popular
Plotting Decimal Numbers On A Number Line (examples) | Khan Academy

8 years ago / 900 views

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_
03:03 Popular
Math Antics - Fractions Are Division

9 years ago / 899 views

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
02:38 Popular
Graphing Linear Equations — Harder Example | Math | New SAT | Khan Academy

8 years ago / 899 views

Watch Sal work through a harder Graphing linear equations problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-heart-of-algebra/v/sat-math-h3-easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the
04:41 Popular
Subtracting Mixed Numbers Word Problem

9 years ago / 898 views

U02_L3_T2_we4 Subtracting Mixed Numbers Word Problem More free lessons at: http://www.khanacademy.org/video?v=tj9oLZYA-AQ Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
11:06 Popular
The Map of Mathematics

3 years ago / 898 views

The entire field of mathematics summarised in a single map! This shows how pure mathematics and applied mathematics relate to each other and all of the sub-topics they are made from. If you would like to buy a poster of this map, they are available here:
03:04 Popular
Steps to Solve Quadradic Equations

5 years ago / 896 views

Steps to Solve Quadradic Equations. Part of the series: Equations. Quadtratic equations can be easily solved by following a straightforward, step-by-step process. Learn the steps to solve quadratic equations with help from a mathematics tutor and educator
02:28 Popular
How To Visualize One Part Per Million

7 years ago / 895 views

View full lesson: http://ed.ted.com/lessons/how-to-visualize-one-part-per-million-kim-preshoff-the-ted-ed-community “Parts per million” is a scientific unit of measurement that counts the number of units of one substance per one million units of another.
Featured
05:20 Popular
Can you solve the false positive riddle? - Alex Gendler

5 years ago / 895 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to the bonus riddle mentioned at the end: https://brilliant.org/tededprobabilitypairs/ Mining unobtainium is hard work – the rare mineral appears in only 1% of rocks in the mine. But y
04:01 Popular
Adding Mixed Numbers

8 years ago / 894 views

Adding mixed numbers
Featured
07:14 Popular
How To Win A Guessing Game - Numberphile

8 years ago / 894 views

A clever use of random numbers to improve your odds in a number guessing game. Alex Bellos Books: http://bit.ly/BellosBooks Monty Hall problem: http://bit.ly/MontyHallProb NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://ww
Featured
03:02 Popular
Elementary, My Dear Schoolhouse Rock

8 years ago / 894 views

1 of Eleven multiplication, math, number videos in the Schoolhouse Rock Series Blast from the past, fun learning!
Featured
02:09 Popular
The Skip Counting by 9 Song | Silly School Songs

3 years ago / 892 views

Kids will have a blast learning how to skip count by 9 with this fun and catchy tune. For more music and information, please visit http://sillyschoolsongs.com. Lyrics:I love to count by 9I do it all the timeIt's pretty simple once you've got it in your mi
04:13 Popular
Can You Solve This Grade 12 Geometry Problem From Australia? The Marshmallow Chocolate Puzzle

7 years ago / 891 views

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
08:16 Popular
ck12.org Exercise: Standard Normal Distribution and the Empirical Rule

9 years ago / 890 views

Using the Empirical Rule with a standard normal distribution More free lessons at: http://www.khanacademy.org/video?v=2fzYE-Emar0
14:25 Popular
Vector Triple Product Expansion (very optional)

9 years ago / 889 views

A shortcut for having to evaluate the cross product of three vectors More free lessons at: http://www.khanacademy.org/video?v=b7JTVLc_aMk
00:56 Popular
Counting With Small Numbers | Counting | Early Math | Khan Academy

8 years ago / 889 views

Learn how to count squirrels and horses. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-counting/e/counting-out-1-20-objects?utm_source=YT&utm_medium=Desc&
04:30 Popular
How Much Tea Would it Take to Turn the Boston Harbor into Tea?

5 years ago / 889 views

We wanted to know if enough tea was dumped in Boston harbor during the Boston tea party to turn the entire thing to tea. So we did some math. Subscribe! http://bit.ly/ACSReactions Facebook! http://facebook.com/ACSReactions Twitter! http://twitter.com/ACSR
02:59 Popular
Reading Bar Graphs

9 years ago / 888 views

u08_l1_t1_we2 Reading Bar Graphs More free lessons at: http://www.khanacademy.org/video?v=kiQ6MUQZHSs Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
15:43 Popular
Calculus: Derivatives 1 (new HD version)

9 years ago / 887 views

Calculus-Derivative: Understanding that the derivative is just the slope of a curve at a point (or the slope of the tangent line) More free lessons at: http://www.khanacademy.org/video?v=ANyVpMS3HL4
01:38 Popular
The Skip Counting by 7 Song | Silly School Songs

3 years ago / 886 views

Learn how to skip count by 7 with this funky and catchy tune! For more music and information, please visit http://sillyschoolsongs.com. Lyrics:7, 14, 21, 28, 35, 42, 49, 56, 63, 707, 14, 21, 28, 35, 42, 49, 56, 63, 70Now there's seven notes on a musical s
05:07 Popular
Check your intuition: The birthday problem - David Knuffke

6 years ago / 885 views

View full lesson: http://ed.ted.com/lessons/check-your-intuition-the-birthday-problem-david-knuffke Imagine a group of people. How big do you think the group would have to be before there’s more than a 50% chance that two people in the group have the same
Featured
12:58 Popular
Primes on the Moon (Lunar Arithmetic) - Numberphile

5 years ago / 884 views

Featuring Neil Sloane from the Online Encyclopedia of Integer Sequences (OEIS). Lunar Arithmetic (aka Dismal Arithmetic) More links & stuff in full description below ↓↓↓ Neil Sloane is the founder of the OEIS: https://oeis.org Lunar Primes: https://oeis.o
03:01 Popular
Try Trials: Crash Course Kids #39.2

8 years ago / 882 views

We've talked about variables and solving problems. But how do we keep working on a problem if the first solution doesn't fix it? Trials! In this episode of Crash Course Kids, Sabrina shows us how to use Trials to figure out what the problems are with our
04:30 Popular
Adults Are Arguing About This 3rd Grade Math Problem

7 years ago / 882 views

"If Sue runs around the track twice, and John runs around the track four times more than Sue, how many times does John run around the track?" This problem was given to 3rd graders. A parent disagreed with the answer the teacher was marking. After it was p
22:55 Popular
The Golden Ratio: Is It Myth or Math?

3 years ago / 881 views

Were on PATREON! Join the community https://www.patreon.com/itsokaytobesmartSUBSCRIBE so you dont miss a video! http://bit.ly/iotbs_sub More info and sources below The golden ratio. Some say its the most mythical number in the universe. Others say it unde
08:04 Popular
Converting units of length

9 years ago / 880 views

U06_L1_T1_we3 Converting units of length More free lessons at: http://www.khanacademy.org/video?v=AGFO-ROxH_I Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
06:17 Popular
Solving Percent Problems | Decimals | Pre-Algebra | Khan Academy

8 years ago / 880 views

We'll use algebra to solve this percent problem. Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-word-probs-pre-alg/v/solving-percent-problems-2?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the
05:02 Popular
Sesame Street: The Triangle Is Right!

7 years ago / 879 views

And now it's time to play America's favorite game show, The Triangle is Right, where the answer to every answer is triangle! Here's your host, Guy Smiley! Take it away Guy! Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_c
05:44 Popular
Dimensional Analysis

3 years ago / 879 views

This video provides a basic introduction into dimensional analysis. It explains how to convert years into seconds and how to convert feet per second to miles per hour.My Website: https://www.video-tutor.netPatreon Donations: https://www.patreon.com/MathSc
03:52 Popular
The Fundamental Theorem of Arithmetic

9 years ago / 877 views

The Fundamental Theorem of Arithmetic More free lessons at: http://www.khanacademy.org/video?v=8CluknrLeys
04:52 Popular
Can You Solve The Boat Puzzle?

8 years ago / 877 views

You throw a rock in water from your boat. Can you figure out what happens to the water level? physicsgirl.org instagram.com/thephysicsgirl facebook.com/thephysicsgirl twitter.com/thephysicsgirl Host/Writer/Editor: Dianna Cowern With help from: Jimmy Wong
Featured
04:09 Popular
Counterfeit Coins - Brain Teaser

8 years ago / 877 views

Find the counterfeit coins in one of the eight bags! You may only use the weight scale once in this brain teaser. How do you know which bag has the counterfeit coins? I also have a bunch of other fun brain teasers as well. Heaven and hell - Brain Teaser h
05:20 Popular
Can you solve the giant cat army riddle? - Dan Finkel

5 years ago / 877 views

Practice more problem-solving at https://brilliant.org/TedEd/ Sign up to be emailed the solution to the bonus riddle: https://brilliant.org/tededm2s3/ The villainous Dr. Schrödinger has developed a growth ray and intends to create an army of giant cats to
05:07 Popular
Converting to slope-intercept form

9 years ago / 875 views

U04_L1_T4_we1 : Converting to slope-intercept form More free lessons at: http://www.khanacademy.org/video?v=V6Xynlqc_tc Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
05:05 Popular
Solving Ratio Problems With Tables Example 1 | Pre-Algebra | Khan Academy

8 years ago / 875 views

We're displaying ratios in a table format here, and then asking: given a ratio, solve for equivalent ratios. Here are a few examples to practice on. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/r
07:40 Popular
Can You Solve The 21 Flags Game From Survivor?

7 years ago / 875 views

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
07:52 Popular
Find The 10 Digit Number Classic Puzzle And Solution

7 years ago / 874 views

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:
05:33 Popular
What is 6÷2(1+2) = ? The Correct Answer Explained

7 years ago / 874 views

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
Featured
10:07 Popular
The Distributive Property In Arithmetic

8 years ago / 873 views

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
Featured
07:08 Popular
Early Train Word Problem | Linear Equations | Algebra I | Khan Academy

8 years ago / 873 views

Fun word problem that is almost a brain teaser. Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/v/patterns-in-sequences-1?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI
04:33 Popular
Multiplying Negative And Positive Fractions | Fractions | Pre-Algebra | Khan Academy

8 years ago / 873 views

See examples of multiplying and dividing fractions with negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplying-fractions-pre-alg/e/multiplying_fractions?utm_
47:52 Popular
How Not To Be Wrong: The Power Of Mathematical Thinking

8 years ago / 872 views

The maths we learn in school can seem like a dull set of rules, laid down by the ancients and not to be questioned. Jordan Ellenberg shows how wrong this view is through stories that show the power of mathematical thinking. Subscribe for regular science v
10:20 Popular
SURPRISING Coin Flipping Probability - Flips To HH Versus HT

7 years ago / 871 views

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
05:48 Popular
Winning At Rock Paper Scissors - Numberphile

8 years ago / 870 views

Squarespace: http://www.squarespace.com/numberphile This video features Hannah Fry - https://twitter.com/fryrsquared More on this topic (and lizards): http://youtu.be/Z8lv2vy5vco And even more on this topic: http://youtu.be/ygHwBxWyI6E The paper: http://b
Featured
12:52 Popular
Chi Square Test - Explained

8 years ago / 870 views

Learn how to perform a Chi Square Test with this easy to follow statistics video. I also provided the links for my other statistics videos as well. Chi Square Test - with contingency table https://www.youtube.com/watch?v=misMgRRV3jQ Hypothesis testing - t
01:53 Popular
How to Divide Fractions

5 years ago / 870 views

Watch more Basic Math Skills videos: http://www.howcast.com/videos/262765-How-to-Divide-Fractions Math can be scary, but don't give up. Follow these simple steps, and soon you'll be dividing fractions like a pro. Step 1: Write the problem Write out the fi
04:30 Popular
Where do math symbols come from? - John David Walters

6 years ago / 869 views

Sign up for our newsletter here: https://ed.ted.com/newsletter View full lesson: https://ed.ted.com/lessons/where-do-math-symbols-come-from-john-david-walters Math is full of symbols: lines, dots, arrows, English letters, Greek letters, superscripts, subs
Featured
03:52 Popular
Angles, Arc Lengths, And Trig Functions — Basic Example | Math | New SAT | Khan Academy

8 years ago / 868 views

Watch Sal work through a basic Angles, arc lengths, and trig functions 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-harder?utm_source=YT&utm_medium=Desc&utm_campaig
10:36 Popular
Special Products of Binomials

9 years ago / 867 views

Special Products of Binomials More free lessons at: http://www.khanacademy.org/video?v=bFtjG45-Udk
02:21 Popular
Reading Pictographs

9 years ago / 865 views

u08_l1_t1_we1 Reading Pictographs More free lessons at: http://www.khanacademy.org/video?v=qrVvpYt3Vl0 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
12:17 Popular
IIT JEE Circle Hyperbola Common Tangent Part 5

9 years ago / 865 views

2010 IIT JEE Paper 1 Problem 45 Circle Hyperbola Common Tangent Part 5 More free lessons at: http://www.khanacademy.org/video?v=rPoqpQcgNv4
25:13 Popular
Null Space and Column Space Basis

9 years ago / 862 views

Figuring out the null space and a basis of a column space for a matrix More free lessons at: http://www.khanacademy.org/video?v=_uTAdf_AsfQ
05:07 Popular
Math Antics - Percents Missing Total

9 years ago / 861 views

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
03:40 Popular
Average Rate Of Change For Function From Table

8 years ago / 861 views

Average rate of change for function from table