QooleMath
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Simplify Difficult Fractions DDD
basalduat
133 views
Hand written, step by step instructions to simplify fractions.
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Finger Multiplication by 9
basalduat
72 views
Do multiplication on your fingers
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Finger Multiplication by 6
basalduat
153 views
Do multiplication on your fingers
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Finger Multiplication by 5
basalduat
186 views
Do multiplication on your fingers
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Finger Multiplication by 4
basalduat
193 views
Do multiplication on your hands
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Derive Formula: Area of Equilateral Triangle
basalduat
639 views
Find a single variable, s= side, formula for the area of an Equilateral triangle.
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Fold Cut A 5 Five Pointed Star
basalduat
452 views
Fold and cut a true five pointed star. Use symmetry to support the assertion that the star is accurate. Easy to construct. Only two cuts are needed.
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Pythagorean Proof
basalduat
300 views
Learn how President Garfield proved Pythagorus' Theorem. Also, learn how to construct the sum of two squares by decomposing two squares.
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Quadrature: Rectangle to Square With Equal Area
basalduat
266 views
Given any Rectangle, learn how to construct a Square with the same Area. The activity also demonstrates how to find the Square Root of a number by folding a Rectangle.
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Algorithm: Converge to Fifths
basalduat
130 views
I show how to divide a rectangle into five equal panels by repeated folding the rectangle into halves.
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