If your kids know Sir Cumference and the Dragon of Pi, these are the four we actually own, and one of them beat Dragon of Pi as our actual favorite, gummy bears included.

Shelf Life: a family reunion gone sideways over table arrangements, and the popsicle-stick building project my kids couldn't stop tinkering with once they saw why it mattered. Area and perimeter, hands-on, no worksheet required.

Welcome to Shelf Life—a series of short, practical reviews of the books that actually worked in my classrooms, homeschool, and co-ops. Mostly STEM, with the occasional history detour (because even a science teacher needs a good story). This first post: the money and coin books that helped my dyscalculic child see math.