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• 08:00

### 15 BRILLIANT MATH TRICKS THEY DON'T TEACH YOU AT SCHOOL

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Too bad they don't teach you this at school! But I always got you! So check out these genius Math tricks and have fun! ;) ---------------------------------------------------------------------------------------- 5-Minute Crafts: https://www.goo.gl/8JVmuC F

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• 02:31

### The Math Behind the Polls

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When polls try to tease out what a group of people is thinking, what are they measuring and how can they go wrong?

• 06:33

### Why Are Cicadas So Good At Math?

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T-SHIRTS! http://dftba.com/besmart VIDCON! http://bit.ly/1DqnxeQ Follow me to Gross Science: http://youtu.be/IDBkj3DjNSM ↓ More info and sources below ↓ Do periodical cicadas “know” how to calculate prime numbers? One of the strangest life cycles in all o

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• 04:04

### Can Math Explain How Animals Get Their Patterns?

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How Alan Turing's Reaction-Diffusion Model Simulates Patterns in Nature Thanks to http://www.audible.com/minuteearth for sponsoring this video. Asparagus Pee Survey Results: https://goo.gl/8x7abL ___________________________________________ If you liked th

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• 08:41

### Math in the Simpsons: Homer's theorem

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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'

• 05:05

### Try This April Fools' Trick! (Mystery Math)

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Here's a simple trick you can play on your friends!

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• 07:41

### Math Mechanics of Thai Banking Crisis

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Going through the mechanics of how a Thai financial institution can lose their shirt when their currency devalues. More free lessons at: http://www.khanacademy.org/video?v=9p3HNMe-oAI

• 02:18

### DIY | Burrito Math | Cartoon Network

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Jack dreams of making the mathematically perfect burrito but when he tries to do it the easy way, using his sassy robo pal Mitchell, everything gets really gross. Earn the Mathematician patch from DIY.org! https://diy.org/skills/mathematician From DIY.org

• 12:32

### Protecting Privacy with MATH (Collab with the Census)

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This video was made in collaboration with the US Census Bureau and fact-checked by Census Bureau scientists. Any opinions and errors are my own. For more information, visit https://census.gov/about/policies/privacy/statistical_safeguards.html or search "d

• 30:07

### Mind Bending Math: Riddles and Paradoxes

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Learn that determining the will of the voters can require a mathematician. Delve into paradoxical outcomes of elections at national, state, and even club levels. Study Kenneth Arrow’s Nobel prize-winning impossibility theorem, and assess the U.S. Electora

• 09:39

### Spring potential energy example (mistake in math)

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A spring, a frozen loop-d-loop and more! (See if you can find the mistake I made and get the right answer!) More free lessons at: http://www.khanacademy.org/video?v=P3QV9ktuYlQ

• 12:05

### Twin paradox: the real explanation (no math)

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The Twin Paradox is the most famous of all of the seeming-inconsistencies of special relativity. In this video, Fermilab’s Dr. Don Lincoln explains it without using mathematics. This is a companion video for his earlier one in which the same question was

• 03:12

### Science Artist Uses Math to Make Sculptures

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John Muntean has been creating magic angle sculptures since 1986. At first, the sculpture just looks like an abstract piece. When rotated at the magic angle and lit from above, a three-part masterpiece emerges. See more from John Muntean: https://www.jvmu

• 01:52

### Three Solutions! Can You Find Them? (math trick with answers)

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★★ Please LIKE if you found at least ONE solution!! ★★ This is an impossible equation, because 6+4 is clearly not 4... BUT there are three solutions to this equation by moving just ONE matchstick. Can you find all three solutions? I am curious to see how

• 09:57

### Singapore Math: Grade 3a Unit 2 (part 3)

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A man selling balloons at a carnival.

• 13:04

### Singapore Math: Grade 3a Unit 2 (part 4)

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Some more word problems

• 14:18

### Singapore Math: Grade 3a Unit 2 (part 5)

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• 13:54

### Singapore Math: Grade 3a Unit 2 (part 6)

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More adding of 4 digit numbers

• 12:13

### Singapore Math: Grade 3a Unit 2 (part 7)

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Even more adding of 4-digit numbers

• 15:31

### Singapore Math: Grade 3a, Unit 1 (part 1)

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Objectives: Read and write numbers less than 10,000. Relate each 4-digit number to its place value.

• 15:02

### Singapore Math: Grade 3a Unit 2 (part 8)

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Subtracting 4-digit numbers

• 15:11

### Singapore Math: Grade 3a Unit 1 (part 2)

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Objectives: Read and write numbers less than 10,000. Relate each digit in a 4-digit number to its place value.

• 13:07

### Singapore Math: Grade 3a Unit 2 (part 9)

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More on subtracting 4-digit numbers

• 13:18

### Singapore Math: Grade 3a, Unit 1 (part 3)

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Objectives: Read and write numbers less than 10,000. Relate each digit in a 4-digit number to its place value. Compare and order numbers within 10,000.

• 12:24

### Singapore Math: Grade 3a, Unit 1 (part 4)

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More on place value

• 13:07

### Singapore Math: Grade 3a, Unit 1 (part 5)

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Even more on place value

• 15:44

### Singapore Math: Grade 3a, Unit 1 (part 6)

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Ordering numbers using place value

• 13:06

### Singapore Math: Grade 3a, Unit 1 (part 7)

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Place value, ordering numbers, number patterns

• 15:39

### Singapore Math: Grade 3a, Unit 1 (part 8)

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More on number patterns with place value.

• 17:53

### Singapore Math: Grade 3a, Unit 1 (part 9)

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More number patterns with place value

• 14:26

### Singapore Math: Grade 3a Unit 2 (part 1)

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The sum of and difference between 2 numbers.

• 13:07

### Singapore Math: Grade 3a Unit 2 (part 2)

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• 01:44

### Math Whizzes Of Ancient Babylon Figured Out Forerunner Of Calculus

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Clay tablets document precocious astronomical calculations by 50 B.C.E. Read more: http://scim.ag/1nRxu3V Read the research (\$): http://scim.ag/1PVEVgT

• 19:37

### Smart Math Techniques - Solve maths problems in seconds

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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

• 11:31

### Singapore Math: Grade 3a Unit 2 (part 10)

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Some final 4 digit subtraction problems.

• 12:16

### Singapore Math: Grade 3a Unit 2 (part 11)

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Some 2-step word problems.

• 12:09

### The Math Behind Basketball's Wildest Moves | Rajiv Maheswaran | TED Talks

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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

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• 02:26

### Math Puts a New Twist on Solving a Rubik's Cube with the Fewest Moves

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For this puzzle with over 43 quintillion permutations, author Ian Scheffler explains how players have found the most efficient route to resolving a Rubik’s cube.

• 02:04

### Comparing Numbers Of Objects | Counting | Early Math | Khan Academy Bangla

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• 00:59

### Average Height Of A Building's Floor | Multiplication And Division | 3th Grade | Khan Academy

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• 02:17

### The Advantages of Using the Least Common Denominator When Adding & Subtracting Denominators

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The Advantages of Using the Least Common Denominator When Adding & Subtracting Denominators. Part of the series: Adding and Subtracting Fractions. Using the least common denominator when adding and subtracting fractions certainly has its fair share of adv

• 04:51

### Cube Root Of A Non-perfect Cube | Pre-Algebra | Khan Academy

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• 04:20

### Visually Converting From Tenths To Hundredths | 4th Grade | Khan Academy

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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

• 09:43

### Exponent Rules Part 1 | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

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• 02:49

### Simpler Insertion Sort Function

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Simplifying the while loop for the Insertion Sort function

• 02:04

### Ratio Word Problem: Boys To Girls | Pre-Algebra | Khan Academy

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In this example, we are given a ratio and then asked to apply that ratio to solve a problem. No problem! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/rat

• 04:11

### Decomposing Hundredths Into Tenths And Hundredths | 4th Grade | Khan Academy

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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

• 14:13

### Introduction To Ratios | Ratios, Proportions, Units, And Rates | Pre-Algebra | Khan Academy

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What a ratio is. Simple ratio problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/ratio_word_problems?utm_source=YT&utm_medium=Desc&utm_campaign=PreAl

• 03:40

### Multi-step Word Problem With Decimals And Subtraction | Pre-Algebra | Khan Academy

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First visualize this word problem then use subtraction and multiplication of decimals and fractions to get at the answer. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topi

• 06:55

### Place Value For Decimals Greater Than One (examples) | 4th Grade | Khan Academy

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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

• 09:29

### Dividing Decimals With Hundredths Example 3 | Decimals | Pre-Algebra | Khan Academy

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The old saying is "practice makes perfect." Let's keep practicing dividing decimals and making our divisor a whole number. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/dividing-d

• 03:33

### Finding A Percentage | Decimals | Pre-Algebra | Khan Academy

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Once again, fractions are our friends as we use them to find a percentage. You'll also see a couple of different ways to arrive at the answer. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimal

• 04:32

### The Zeroth Power | Arithmetic Operations | 6th Grade | Khan Academy

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Learn why a number raised to the zero power equals 1. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-arithmetic-operations/cc-6th-exponents/e/positive_and_zero_exponents?utm_source=Y

• 02:07

### Percentage Of A Whole Number | Decimals | Pre-Algebra | Khan Academy

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We hope you're beginning to see that there's more than one way to skin a cat. In other words, there are several different ways to solve problems involving percentages, decimals, and fractions. Watch as find the percentage of a whole number. Watch the next

• 05:15

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Explore how the value of an algebraic expression changes as the value of its variable changes. The algebraic expressions used in this video are 100-x, 5/x + 5, and (3y)/(2y). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacad

• 04:51

### Ratios for recipes

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Ratios and fractions for cooking recipes.

• 03:29

### Comparing Decimals Example 1 | Decimals | 4th Grade | Khan Academy

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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

• 07:43

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• 13:21

### Basic Multiplication | Multiplication And Division | Arithmetic | Khan Academy

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Introduction to multiplication Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/multiplication-division/multiplication_fun/e/multiplication_0.5?utm_source=YT&utm_medium=Desc&utm_campaign=Arithmetic Wa

• 11:30

### Ordering Numeric Expressions

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Converting percentages and fractions to decimals to order numbers

• 04:37

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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

### Comparing Numbers Represented In Different Ways | 4th Grade | Khan Academy

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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

• 08:40

### CHRISTMAS CARTOON: Santa's Surprise (1947) Little Audrey Cartoon [HD 1080] [Cartoons for Children]

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As Santa delivers presents to Audrey and other children from different parts of the world (a Dutch boy, a Chinese boy, an African-American boy, a Russian boy, a Hawaiian girl and a Filipino girl), they slip into his sleigh to repay him by cleaning up his

• 02:29

### These Dinosaurs Are Hungry!

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What do dinosaurs do when they get hungry? Take a look at some of the crazy antics they go through for a quick bite. Watch the whole playlist of dinosaur videos here: http://www.youtube.com/watch?v=sW4p6vzviKQ&list=PLfpPYJH6OjtZGZH1hlR40wD4rnq14p41x&index

• 01:41

### How to Add and Subtract Mixed Numbers and Show the Work

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How to Add and Subtract Mixed Numbers and Show the Work. Part of the series: Adding and Subtracting Fractions. When adding and subtracting mixed numbers it is always important to remember to show your work. Add and subtract mixed numbers and show the work

• 02:36

### Number Patterns: Seeing Relationships | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

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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

• 02:48

### Adding In Binary | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

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• 07:34

### Hexadecimal Number System | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

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• 10:00

### Introduction To Number Systems And Binary | Pre-Algebra | Khan Academy

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• 03:43

### Converting From Decimal To Hexadecimal Representation | Pre-Algebra | Khan Academy

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• 03:52

### Converting From Decimal To Binary | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

348 views / 0 likes - added

Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/large-number-decimal-to-binary?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanaca

• 00:52

### Reading Bar Charts: Basic Example | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

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Let's start with this bar chart that brings back the days of Harry Potter! Putting our toes in the water on this one... Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/

• 03:28

### Inequality Word Problems | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

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We're writing inequalities by using information from the word problems. Woohoo! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/greater-than-less-than/e/writing-numeric

• 06:14

### How To Plot Inequalities On A Number Line | Pre-Algebra | Khan Academy

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Learn how to graph an inequality on a number line to indicate which values make it true. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/greater-than-less-than/e/writin

• 04:31

### Number Patterns: Interpreting Relationships | Pre-Algebra | Khan Academy

282 views / 0 likes - added

Examining the points on a number line and interpreting the patterns to discover the relationships. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/number-patterns/e/vis

• 02:27

### Inequality Word Problem: One Variable | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

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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

• 05:27

### Converting Directly From Binary To Hexadecimal | Pre-Algebra | Khan Academy

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• 03:53

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• 11:57

### The Wallis Formula For π

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Start with the pair of fractions (2/1)(2/3). Now increment each number by 2 to get the pair of fractions (4/3)(4/5). Repeat this to get the next pair, and repeat this infinitely many times. If you then multiply all the fractions, you get a marvelous value

• 09:23

### Ordering numeric expressions

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Ordering numbers expressed as decimals, fractions, and percentages More free lessons at: http://www.khanacademy.org/video?v=Llt-KkHugRQ

• 12:49

### Scientific Notation Examples | Pre-Algebra | Khan Academy

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• 05:20

### Order Of Operations: PEMDAS | Arithmetic Properties | Pre-Algebra | Khan Academy

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Work through another challenging order of operations example with only positive numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/order-of-operations/order_of_operations/e/order_of_operations

• 03:21

### Introduction To Perimeter | Measurement | Pre-Algebra | Khan Academy

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Find perimeter by adding side-lengths of various figures. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/measurement/perimeter/e/perimeter_1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Wa

• 08:30

### Multiplying And Dividing Negative Numbers | Pre-Algebra | Khan Academy

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Multiplying and dividing negative numbers Watch the next lesson: https://www.khanacademy.org/math/arithmetic/absolute-value/abs_value_tutorial/v/absolute-value-and-number-lines?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous less

• 03:00

### Inverse Property Of Addition | Arithmetic Properties | Pre-Algebra | Khan Academy

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The simple idea that a number plus its negative is 0 Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/order-of-operations/arithmetic_properties/v/inverse-property-of-multiplication?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra M

• 03:36

### Approximating Irrational Number Exercise Example | Pre-Algebra | Khan Academy

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Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/order-of-operations/rational-irrational-numbers/e/approximating-irrational-numbers?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the nex

• 09:17

### Unit Conversion Within The Metric System | Pre-Algebra | Khan Academy

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Metric unit conversion Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/metric-system-tutorial/v/converting-within-the-metric-system?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? http

• 01:11

### Subtracting Decimals: Example 1 | Decimals | Pre-Algebra | Khan Academy

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Subtracting decimals...up to the hundredths placement. Line up those decimals before you start. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/adding-decimals-pre-alg/e/subtracting

• 05:34

### Multiplying Positive And Negative Numbers | Pre-Algebra | Khan Academy

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Learn some rules of thumb for multiplying positive and negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/absolute-value/mult_div_negatives/e/multiplying_and_dividing_negative_numbers?

• 06:29

### Multiplying Decimals: Place Value And Reordering | Decimals | Pre-Algebra | Khan Academy

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We want you to develop an intuition about how to work with decimals. Understanding how you can rewrite decimals by considering the place value will help you multiply! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/

• 02:39

### Comparing Decimals: Ordering From Least To Greatest | Decimals | Pre-Algebra | Khan Academy

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This is a fun example where we reorder decimals from smallest to largest. You're looking for the place value that is the most significant, and then working backwards. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/

• 03:50

### Introduction To Multiplying Decimals | Decimals | Pre-Algebra | Khan Academy

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Multiplying decimals can be confusing because there's always the question as to where the decimals goes in the answer. We're about to show you so you'll never have to question it again! Practice this lesson yourself on KhanAcademy.org right now: https://w

• 20:48

### Introduction To Scientific Notation | Pre-Algebra | Khan Academy

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Introduction to scientific notation. An in-depth discussion about why and how scientific notation is used. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/scientific-notation/e/sc

• 08:13

### Prime Numbers | Factors And Multiples | Pre-Algebra | Khan Academy

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What does it mean to be a prime number? Let's progress though some whole numbers and ask ourselves if they meet the criteria. What is the criteria you ask? Watch. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math

• 03:03

### Introduction To Exponents | Pre-Algebra | Khan Academy

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Taking an exponent is basically the act of repeated multiplication. You know how to multiply, right? If so, understanding exponents is completely within your grasp! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/ma

• 04:00

### Finding Factors And Multiples | Factors And Multiples | Pre-Algebra | Khan Academy

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To find the factors of a number means to find all the whole numbers that the number in question is divisible by. Can you help us find the factors in this example? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math

• 02:37

### How To Write Basic Expressions With Variables | 6th Grade | Khan Academy

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• 04:20

### Dividing A Whole Number By A Decimal | Decimals | Pre-Algebra | Khan Academy

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When dividing a whole number by a decimal, you're going to need to change that decimal into a whole number. How? We'll show you. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/divi

• 01:58

### How To Find Equivalent Expressions By Combining Like Terms And Using The Distributive Property

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• 04:17

### Introduction To Area And Unit Squares | Measurement | Pre-Algebra | Khan Academy

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Cover figures with square units to find their area. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/measurement/area-basics/e/measuring-area-with-unit-squares?utm_source=YT&utm_medium=Desc&utm_campa

• 02:57

### Banana Proportionality | Rated And Proportional Relationships | 7th Grade | Khan Academy

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• 03:27

### How To Use The Distributive Property To Factor Out The Greatest Common Factor | Khan Academy

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Learn how to apply the distributive property to factor numerical expressions (no variables). 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-distribut

• 07:14

### Negative Exponents | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

361 views / 0 likes - added

How does a negative exponent affect our answer? Before you assume that the answer must be negative, think again! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/negative-exponents

• 06:29

### How To Use The Distributive Property With Variables | 6th Grade | Khan Academy

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Learn how to apply the distributive property to algebraic expressions. 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-distributive-property/e/distrib

• 06:17

### Solving Percent Problems | Decimals | Pre-Algebra | Khan Academy

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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

• 02:39

### Proportionality Between Side Length And Perimeter | 7th Grade | Khan Academy

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Is the perimeter of a square proportional to the side length of the square? 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-rel/e/analyzing-and-

• 01:46

254 views / 0 likes - added

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

• 02:54

### How To Describe Real-world Situations With Inequalities | 6th Grade | Khan Academy

271 views / 0 likes - added

Learn how to write inequalities to model real-world situation. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-inequalities/e/inequalities-in-one-var

• 01:34

### Solving Ratio Problems With Graph | Pre-Algebra | Khan Academy

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In this example we'll plot points on the x and y axis to reflect the given ratios. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/solving-ratio-problems-wi

• 06:56

### Exponents And Powers Of Zero Patterns | Pre-Algebra | Khan Academy

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Now that we understand how to interpret an exponent and how the patterns in zeros are related to the exponent, we can solve more complicated problems! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra

• 03:46

### Testing Whether Area Is Proportional To Side Length | 7th Grade | Khan Academy

283 views / 0 likes - added

Is the volume of a square proportional to the side length of the square? 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-rel/e/analyzing-and-ide

• 04:25

### Multiplying Challenging Decimals | Decimals | Pre-Algebra | Khan Academy

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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

• 05:05

### Solving Ratio Problems With Tables Example 1 | Pre-Algebra | Khan Academy

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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

• 06:55

### What Are Variables, Expressions, And Equations? | Introduction To Algebra | Algebra I | Khan Academy

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Learn what variables, expressions, and equations really are. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/introduction-to-algebra/feel-for-equations-and-inequalit/e/dependent-and-independent-variable

• 06:20

### Greatest Common Factor Explained | Factors And Multiples | Pre-Algebra | Khan Academy

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Here's a nice explanation of least common factor (or least common divisor) along with a few practice example exercises. Let's roll. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/factors-multiples/

• 04:16

### Least Common Multiple Exercise | Factors And Multiples | Pre-Algebra | Khan Academy

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We're practicing finding the least common multiple in these example exercises. We'll teach you the prime factorization approach which is a pretty nifty way to find the lcm (least common multiple). Practice this lesson yourself on KhanAcademy.org right now

• 02:36

### Converting Decimals To Percents | Decimals | Pre-Algebra | Khan Academy

293 views / 0 likes - added

Need to convert a decimal to a percent? Ok, we'll just use our fraction friends to get us there. Watch and be amazed. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-intro-p

• 04:05

### How To Find Mistakes In One Step Equations | 6th Grade | Khan Academy

342 views / 0 likes - added

Learn how to spot mistakes in someone else's work as they attempt to solve one-step equations. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-one-st

• 04:07

333 views / 0 likes - added

Learn how to add and subtract negative numbers. The problems solved in this video are 2 - 3 = -1 and -2 - 3 = -5 and -2 + 3 = 1 and 2 - (-3) = 5 and -2 - (-3). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pr

• 03:09

### How To Write Basic Algebraic Expressions From Word Problems | 6th Grade | Khan Academy

340 views / 0 likes - added

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

• 07:51

### Volume: How To Measure It | Measurement | Pre-Algebra | Khan Academy

309 views / 0 likes - added

Volume is a measurement in the 3rd dimension. This means that it not only has width and height, but it has depth as well. Let's watch this video in which we get a great explanation of how we measure volume. Practice this lesson yourself on KhanAcademy.org

• 09:36

### Negative Numbers Introduction | Negative Numbers And Absolute Value | Pre-Algebra | Khan Academy

309 views / 0 likes - added

Mysterious negative numbers! What ARE they? They are numbers less than zero. If you understand the nature of below zero temperatures, you can understand negative numbers. We'll help. Practice this lesson yourself on KhanAcademy.org right now: https://www.

• 04:21

### How To Write One-step Equations For Word Problems | 6th Grade | Khan Academy

443 views / 0 likes - added

Learn how to write basic equations to model real-world situations. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-super-yoga/e/equations-in-one-vari

• 09:16

365 views / 0 likes - added

• 08:34

### LCM And GCF Word Problems | Factors And Multiples | Pre-Algebra | Khan Academy

346 views / 1 likes - added

Here we have a couple of word problems--one searching for the least common multiple and the other for the greatest common factor. Just read them with us slowly and follow along. You'll get it. Practice this lesson yourself on KhanAcademy.org right now: ht

• 02:49

### Percent Word Problem Example 2 | Decimals | Pre-Algebra | Khan Academy

296 views / 0 likes - added

It's nice to practice conversion problems, but how about applying our new knowledge of percentages to a real life problem like recycling? Hint: don't forget your long division! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanac

• 13:25

### 19 BRAIN TEASERS THAT WILL INCREASE YOUR IQ LEVEL

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These 19 cool brain teasers and optical illusion will help you increase your IQ one level up: 00:14 - Mystery riddle to test your ability to think in dangerous situation. 01:23 - Logic test - Math riddle. An easy riddle to test your perception and even ma

• 04:42

### How To Write Algebraic Expressions From Word Problems | 6th Grade | Khan Academy

495 views / 0 likes - added

Learn how to write 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-alg-e

• 01:09

### Musical Straw - Sick Science! #225

378 views / 1 likes - added

Check out cool science kits and toys: www.stevespanglerscience.com See the full experiment here: http://www.stevespanglerscience.com/lab/experiments/musical-straw So, you're waiting for your dinner to arrive and you're bored out of your mind. There's noth

• 04:08

### Plotting Decimal Numbers On A Number Line (examples) | Khan Academy

281 views / 0 likes - added

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_

• 10:28

### Animatronic Wheatley Robot v2.0

54 views / 0 likes - added

Edit: Please note that I am not making or selling any animatronic puppets, and Animatronic Wheatley is not for sale. Doing so would infringe on Valve’s copyright(s) and intellectual property and would be too costly for most people's budget. However,

• 05:11

### The wild world of carnivorous plants - Kenny Coogan

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Venus fly traps, bladderworts and sundews, oh my! Learn about carnivorous plants and their predatory antics to lure, trap and digest prey. -- Around the world there are more than 600 plant species that supplement a regular diet of sunlight, water and soil

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• 02:44

### Dividing a Whole Number by a Fraction by NUMBEROCK

545 views / 1 likes - added

A journey into medieval times is the perfect setting to learn how to divide a whole number by a fraction. Ivan is everyones favorite stone mason as he builds walls and seats from blocks of rocks for us to contemplate what it means to divide by a fraction.

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• 03:28 Popular

### Converting a Fraction to a Decimal Song Rap by NUMBEROCK

1,286 views / 2 likes - added

Follow Davey around as he asks his best friend Steve how to convert a fraction to a decimal. The bell’s about to ring, and Steve gives him the perfect advice in the nick of time! Later on, Davey helps correct the misconceptions of his personified stuffed

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• 18:25

### 30 SCHOOL HACKS YOU CAN'T MISS

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HOW TO MAKE SCHOOL MORE FUN This time I'll show you how to make awesome no-mess pencil sharpener, Tic tac scotch cutter and so many helpful hacks! Learn how to draw prospective without a ruler, measure angles and figure out how many days there are in any

• 01:59

### Graphing Inequalities on a Number Line

295 views / 0 likes - added

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

• 01:56

### How to Do Fractional Coefficients

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How to Do Fractional Coefficients. Part of the series: Math Problems. Fractional coefficients need to be completed in a very specific way. Learn how to do fractional coefficients in math problems with help from a mathematics educator in this free video cl

• 02:56

### How to Quickly Multiply Any Number by 11 I The Great Courses

365 views / 0 likes - added

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 impossible feat? I

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• 17:12

### 28 SUMMER SCHOOL AND STATIONERY HACKS

256 views / 1 likes - added

FUN SCHOOL HACKS This one is for those poor kids who have to attend summer schools! Cheer up folks, I've got plenty of hacks to make school time much more bearable. Check it out! Learn how to draw prospective without a ruler, measure angles and figure out

• 01:44

### Interpreting Two-way Tables | Data And Modeling | 8th Grade | Khan Academy

317 views / 0 likes - added

• 02:06

### Types of Angles, Figures & Shapes

345 views / 0 likes - added

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

• 19:05

### 25 LIFE-SAVING STUDY HACKS YOU DIDN'T KNOW YOU NEEDED

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LIFE-SAVING STUDY HACKS Learn how to draw prospective without a ruler, measure angles and figure out how many days there are in any given month with your hand! These and many others mind-blowing Math tricks are in this video! There are some GREAT tricks f

• 13:58

### 30 BACK TO SCHOOL STATIONERY HACKS

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BACK TO SCHOOL Learn how to draw prospective without a ruler, measure angles and figure out how many days there are in any given month with your hand! These and many others mind-blowing Math tricks are in this video! There are some GREAT tricks for young

• 1:10:07

### Khan Academy Live: AP Calculus

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Taking AP Calculus? Prep for the exam with our free live tutoring session. Dave, one of our calculus experts, will review key concepts, solve sample questions, and share ways to avoid common mistakes. Prep for your AP Calculus exams on Khan Academy: https

• 15:53

### April Fool's! Teacher + students pull off the ultimate prank.

206 views / 1 likes - added

WARNING! A sense of humor is required for this video. What happens when half the class returns from a school trip? Well obviously, they get pranked by the remaining students and their teacher. What else could there be? Remember that playing gags is an art

• 05:20

### Overview Of Pixar In A Box

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To see the full curriculum, go to www.pixarinabox.org. Learn how Pixar filmmakers use science, technology, engineering, art, and math to create movie magic. Pixar in a Box is a collaboration between Khan Academy and Pixar Animation Studios, sponsored by D

• 01:56

### Father Vs. Son Race I Uncle Grandpa I Cartoon Network

275 views / 0 likes - added

Pizza Steve's father comes to visit the gang and almost immediately gets on their nerves with his over the top antics. Pizza Steve must get rid of his dad, and prove to himself that he doesn't need to live in his father's shadow any longer. CN GAMES: http

• 03:06

### 6 Times Table Song Rap | Skip Counting by 6 | NUMBEROCK REMIX!

553 views / 0 likes - added

1.Multiplication Facts Flashcards, Games, & More Here!: https://www.teacherspayteachers.com/Product/Skip-Counting-By-6-times-tables-for-kids-4th-Grade-Math-Help-Maths-Multiplication-Tables-powerdot-maths-2721314 ◀--- Safe Link 2. Buy our eBook Lesson and

• 01:54

### Pizza Steve's Dad I Uncle Grandpa I Cartoon Network

269 views / 0 likes - added

Pizza Steve's father comes to visit the gang and almost immediately gets on their nerves with his over the top antics. Pizza Steve must get rid of his dad, and prove to himself that he doesn't need to live in his father's shadow any longer. CN GAMES: http

• 02:12

### Liters Of Soda For The Party

254 views / 0 likes - added

Math grouping. Word problem.

• 04:01

### Comparing Values With Calculator | Numbers And Operations | 8th Grade | Khan Academy

341 views / 0 likes - added

Learn how to compare 22.9% to √0.45 using a calculator. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/e/approximating-irr

• 02:41

### Multiplying Multiples Of Powers Of 10 | Numbers And Operations | 8th Grade | Khan Academy

317 views / 0 likes - added

Learn how to multiply (9 * 10^9) (-2 * 10^-3). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-orders-of-magnitude/e/orders-of-magnitude?utm_source=YT&utm_m

• 04:03

### Blueberries For Friends

271 views / 0 likes - added

Grouping math problem. Addition and subtraction.

• 04:10

### Approximating With Powers Of 10 | Numbers And Operations | 8th Grade | Khan Academy

318 views / 0 likes - added

Learn how to approximate how much larger the world population was than the US population in 2014. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-orders-of-

• 02:50

### Long Division Song For Kids | 1-Digit Divisor with Remainders

539 views / 0 likes - added

This song is targeted for kids in 3rd Grade, 4th Grade, or 5th Grade. The song works through a problem with a 1-Digit Divisor and a 3 Digit Dividend and comes out with a remainder. The animation contains a very catchy song that kids will love, and even mo

• 10:06

### Overview Of The Official SAT Practice | Tips & Planning | New SAT | Khan Academy

328 views / 0 likes - added

Sal walks through using Official SAT Practice on KhanAcademy.org, which we built in partnership with College Board (the creators of the SAT). Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-tips-planning/new-sat-about-sat/v/sa

• 01:55

### Drawing Image Of Translation | Transformations | Geometry | Khan Academy

365 views / 0 likes - added

• 01:37

### Translation Example | Transformations | Geometry | Khan Academy

342 views / 0 likes - added

• 01:25

### Using Rotation Widget | Transformations | Geometry | Khan Academy

312 views / 0 likes - added

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

### Points After Rotation | Transformations | Geometry | Khan Academy

335 views / 1 likes - added

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

• 06:45

### Calculating Neutral Velocity

231 views / 0 likes - added

Let's now do the math to calculate the equal speed at which both A and B could be traveling away from a "neutral" observer.

• 10:32

### Rotating About Arbitrary Point | Transformations | Geometry | Khan Academy

334 views / 0 likes - added

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:

• 02:46

### Defining Rotation Example | Transformations | Geometry | Khan Academy

348 views / 0 likes - added

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

• 07:19

### Reflecting Segments Over Line | Transformations | Geometry | Khan Academy

309 views / 0 likes - added

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

• 01:48

### Using Reflection Tool | Transformations | Geometry | Khan Academy

416 views / 0 likes - added

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

• 01:32

### Formal Translation Tool Example | Transformations | Geometry | Khan Academy

328 views / 0 likes - added

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

• 05:41

### Points On Line Of Reflection | Transformations | Geometry | Khan Academy

330 views / 0 likes - added

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

• 02:28

### Drawing Line Of Reflection | Transformations | Geometry | Khan Academy

364 views / 0 likes - added

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

• 03:41

### Months of the Year Song for Kids by NUMBEROCK | English

371 views / 0 likes - added

Enjoy our growing library of math videos ad-free at https://www.numberock.com. ◀ SAFE LINK Video's Lesson Plan: https://www.teacherspayteachers.com/Product/Units-of-Time-Seconds-Minutes-Hours-Days-Months-and-Years-Musical-Math-2264663 ◀ SAFE LINK NUMBEROC

• 07:23

### Introduction To Transformations | Transformations | Geometry | Khan Academy

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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

• 03:59

### Vectors and Scalars - Physics

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Learn the difference between vectors and scalars in this simple tutorial. Vectors have direction while scalars do not. You will be a physics expert in no time. My name is Chris and my passion is to teach math. Learning should never be a struggle which is

• 03:54

### Solving the Rubik's Equation

249 views / 2 likes - added

Author and “Speedcuber” Ian Scheffler reveals some of the math behind how you could solve the Rubik’s cube puzzle.

• 07:37

### How Do We Find Earth-Like Planets? Ft. Amor Sciendi

205 views / 1 likes - added

Check out the video we did on James's channel! https://www.youtube.com/watch?v=RqRH22vQDdw&feature=youtu.be Check out Tyler's animation channel! https://www.youtube.com/channel/UCKaBOWQGbSJouF84S8TPvSQ *SUBSCRIBE TO UP AND ATOM* https://www.youtube.com/c/

• 02:49

### Integers Song: Adding and Subtracting with Absolute Value

408 views / 0 likes - added

VIDEO'S LESSON PLAN: https://www.teacherspayteachers.com/Product/Introduction-to-Integers-Multimedia-Bundle-Game-Video-and-Activities-3187436 ◀ Safe Link NUMBEROCK DIGITAL LIBRARY: https://www.teacherspayteachers.com/Product/Math-Worksheets-More-NUMBEROCK

• 07:44

101 views / 0 likes - added

This deceptively simple device can behave in some very unexpected ways. The math and physics behind the movements can be used to explain this behavior.

• 03:41 Popular

### Polygons Song For Kids Rap Video: Geometry Quadrilaterals Hexagons etc.

766 views / 0 likes - added

Full lesson plan and more: http://numberock.com/polygons/ Description: Alan kite surfs, skateboards, bikes, dives, and explores space as he learns about Triangles, Quadrilaterals, Pentagons, Hexagons, Heptagons, Octagons, Nonagons, and Decagons. These sha

• 01:18

### Can You Make 4 Triangles From 6 Matches?

466 views / 0 likes - added

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

• 04:52

### Can You Solve The Two Rope Puzzle?

302 views / 0 likes - added

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

• 04:22

### Impossible Algebra Problem

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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

• 03:02

### Elementary, My Dear Schoolhouse Rock

349 views / 0 likes - added

1 of Eleven multiplication, math, number videos in the Schoolhouse Rock Series Blast from the past, fun learning!

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• 01:40

### How To Match Function Input To Output Given The Formula (example) | Algebra I | Khan Academy

237 views / 0 likes - added

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_

• 03:25 Popular

### Can You Solve This? AA + BB + CC = ABC

772 views / 0 likes - added

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

• 01:07

### How To Match Function Input To Output Given The Graph (example) | Algebra I | Khan Academy

264 views / 0 likes - added

Sal finds the input value for which g(x)=-2 given the graph of g. 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_so

• 05:37

### Linear Models Example 2 | Algebra I | Khan Academy

256 views / 0 likes - added

Marbles and water in tank Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/constructing-and-interpreting-linear-functions?utm_s

• 07:00

### Abstract-ness | Introduction To Algebra | Algebra I | Khan Academy

259 views / 0 likes - added

The general idea behind the word 'abstract' Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra/overview_hist_alg/v/the-beauty-of-algebra?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? h

• 04:42

### How Warren Buffett Tried To Trick Bill Gates In A Dice Game

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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

• 01:42

### How to Calculate a Bigger Slice of Pi

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For thousands of years people have struggled to pin down pi. Watch how mathematicians from Archimedes to those today have wrapped their heads around the math of circles.

• 07:23

### Irregular Plural Nouns, Part II | The Parts Of Speech | Grammar | Khan Academy

261 views / 0 likes - added

The plural of "whale" is "whales", but what's the plural of "child"? David, Khan Academy's resident grammarian, explains. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower

• 05:48

### What Is The Area? "You Should Be Able To Solve This"

154 views / 0 likes - added

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

• 03:04

### How To Create A Function From An Equation (example) | Functions | Algebra I | Khan Academy

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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-

• 02:40

### Interpreting Linear Formulas Example 1 | Algebra I | Khan Academy

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Interpreting a linear formula Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/interpreting_linear_functions/e/interpreting-features-of-linear-functions?ut

• 02:19

### How To Determine The Domain Of A Modeling Function (example With A Function) | Khan Academy

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Sal determines the domain of a function that models the height of a plant over time. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/determining-the-domain-of-a-function/e/interpreting

• 08:52

### Linear Models Example 1 | Algebra I | Khan Academy

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• 08:23

### Constructing Linear Functions Example 2 | Algebra I | Khan Academy

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Linear model for painting Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/constructing-linear-functions-word-problems?utm_sour

• 02:35

### Interpreting Linear Formulas Example 2 | Algebra I | Khan Academy

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Linear equation for file transfer Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/interpreting_linear_functions/e/interpreting-features-of-linear-function

• 03:24

### How To Interpret An Expression With Function Notation | Functions | Algebra I | Khan Academy

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Sal interprets the expression M(30)-M(0)=100 where M models an account balance over time. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/interpreting-function-notation/e/function-nota

• 03:12

### Graphing Linear Functions Example 2 | Algebra I | Khan Academy

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Graphing equation for filling pool Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/graphing-linear-functions-word-problems?utm

• 01:49

### How To Find Two Function Inputs With The Same Output Given Graph (example) | Khan Academy

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Sal finds the input value other than -5 for which f(x)=f(-5), given the graph of f. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/function-inputs-and-outputs/e/functions_matching_inp

• 06:35

### Constructing Linear Functions Example 1 | Algebra I | Khan Academy

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Linear model for ice sheet thickness Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/constructing-linear-functions-word-proble

• 13:43

### IIT JEE Complex Root Probability (part 1)

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2010 Paper 1 problem 31 Math (part 1) More free lessons at: http://www.khanacademy.org/video?v=bV_HSZ_W0nk

• 02:36

### How To Interpret An Expression With Function Notation | Functions | Algebra I | Khan Academy

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Sal interprets the expression P(5) minor P(9) where P models the number of people at the beach over time. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/interpreting-function-notation

• 02:27

### Checking Ordered Pair Solutions To Equations Example 2 | Algebra I | Khan Academy

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Second example of ordered pair solutions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/plugging_in_values?utm_so

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