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Playlist: Intermediate School

Changing Baby Names

You won’t believe how fascinating it is to watch a map of the most popular baby names by US state.

Math Curiosity: Magic Squares

Imagine a 3×3 square in which every row, column, and diagonal have the same sum. That’s a magic square!

Math Curiosity: The Coloring Problem

No video gets me more email from students! How few colors can you use to color in any map so that no two, neighboring regions are the same color?