Young readers learn to match colors and work gears and pivots in this interactive book. A colorful mechanical reef filled with aquatic robots. He spends his days fixing one and then another. It's important that these creatures work correctly, but the Professor is so busy he needs assistance. Future mechanics can come to the rescue by finding the gear that corresponds to the axis of each color and putting it in its place on the page. When positioned properly, each of the Professor's animals works like a charm. This kit includes a board book with rhyming text, a tray of plastic pivots and gears, and four moving Mekanimals, one on each spread.