Broken Calculator: Multiplication Cross Product

How Many Will There Be? Squares in Squares

Give kids a taste of a sequence, let them build an understanding, and then see how far their predictions can take them.

How Many Will There Be? Stairs

Give kids a taste of a sequence, let them build an understanding, and then see how far their predictions can take them.

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.

Same Perimeter, Different Area For Rectangles

Can two rectangles have the same perimeter but… different areas!?

Deducing the Area of Triangles

Using patterns, students try to deduce where that area formula came from.

Math Curiosity: Odds & Squares

Why does the sum of the first 5 odds also equal 5 squared?