Soon it will be the one-hundredth day of school. Minna wants to come up with a really, really different idea for her Ready, Set, 100th project. With the help of Mom, Dad, and Pip, Minna searches the house. She finds and makes all sort of things. She arranges them in sets, and she plays with them. But she's "still thinking!" until, suddenly, she gets a BIG idea! Important math lessons are incorporated into Wallace's signature artwork using origami, recycled paper, markers, crayons, colored pencils and photographs.