Squares of Differences: subtraction practice toward a greater purpose
Here is a phenomenal lesson, accessible to any child who knows how to subtract, and compelling to everyone, up to and including professional mathematicians. [...]
Problems on the Board II: Simplify!
I asked a pair of girls (age 8 and 9) I tutor to ask questions about the chessboard, and got another really great lesson out of it, this one highlighting the [...]
Murder on Gilligan’s Island
I went to a linguistics lecture in college to hear a speaker talk about how they had written Dr. Seuss type books for kids. One gem from that talk that always [...]