Two Piggy Banks

Author:: John Ulbright

To make the coins bigger or smaller, adjust the slider then click "Start over." Drag the coins into the piggy bank or click "Fill randomly" to change the totals.

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Parallel, intersecting and Skew Lines
An Activity on Combinations: Mystic Rose and Handshakes
im.1.3.1.Find All The Points
Area of composite figures : Shaded area inside 3 semi circles
Octants

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Corresponding Angles
Pythagorean Inequality Theorems
均分除法（整數÷整數）_ 工作紙（一）
The Sphere
Identity 4

Discover Topics

Probability
Real Numbers
Indefinite Integral
Normal Distribution
Combinatorics