Instructional Video15:17
Curated Video

INCREDIBLE DISCOVERY! Multiply By Lines Group Theory

6th - 11th
In 2007 a viral video showed the world a new and fun way to multiply numbers visually. Now I present a new discovery - a way to supercharge the visual method with the awesome power of group theory! Subscribe:...
Instructional Video1:50
Curated Video

SHOCKING DISCOVERY - A Dollar Equals A Cent ($1 = 1¢)

6th - 11th
You're going to tell me 1 dollar equals 100 cents. But mathematically, 1 dollar is really equal to 1 cent. Don't believe me? Watch the video for a proof that will blow your mind. In 2006, several Verizon support representatives actually...
Instructional Video5:14
Curated Video

MAGICAL Indian Math Discovery - Numbers 495 and 6174 (Kaprekar Constants)

6th - 11th
The Indian mathematician Dattaraya Ramchandra Kaprekar discovered the number 6174 is reached after repeatedly subtracting the smallest number from the largest number that can be formed from any four digits not all the same. The number...
Instructional Video5:36
Curated Video

MIND-BLOWING MATH DISCOVERY - Multiply Numbers By Lines Rotation Geometry

6th - 11th
Since 2007, millions of people have watched videos on "how the Japanese multiply," also known as "Chinese stick multiplication" or "Vedic Math." With millions of people watching these videos, you would expect everything is known about...
Instructional Video3:45
Curated Video

The "Fibonacci" Sequence Was Actually Discovered In India 1000 Years Earlier

6th - 11th
The sequence of numbers 1, 1, 2, 3, 5, 8, 13, etc was described by Fibonacci around 1200 AD. The Indian mathematician Pingala found the sequence at least 1,000 years before (probably 200 BC) while analyzing Sanskrit poetry. This video...
Instructional Video7:04
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statisticsfun

Why are Degrees of Freedom (n-1) Used in Variance and Standard Deviation

9th - 12th Standards
Don't be mean, be above average. A straightforward video explains why degrees of freedom are used and how to recognize the error based on your sample population. 

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