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Grouping Shapes by Parallel and Perpendicular Sides

Which shapes go together based on parallel and perpendicular lines?

Looping Grid Art

Pick a few numbers, draw some corresponding lines on grid paper, and you’ll end up with some interesting, looping math-y art!

The Angles of a Triangle

Why tell a kid the rules of a triangle when they can discover them!?

The Game of 100

Who can get to 100 first in this simple, but delightful, math game?