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Parentheses: How big of a change can they make!?

Two tiny parentheses. One expression. How big of a change can they make? Bigger than you think.

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?

Propaganda and Logical Fallacies

Let’s see how propaganda techniques can make even something great seem bad.

Showing A Character’s Trait

We tell students to ‘show, not tell’ — but that advice is useless until they experience the difference. This lesson makes it click.