The Calculus board makes math playfully easy to understand, rotating 90 degrees to switch between rows and columns and using circular wooden tiles that can represent 1, 10, or 100 depending on the level. Numbered tiles and arithmetic symbols for addition, subtraction, multiplication, and division help kids see how it all connects, with everything packing away into the included cloth bag when playtime's done. Includes: counting tray, cloth bag, 25 circles, 30 numbers zero to nine, and 15 arithmetic symbols.
