Mighty Math Carnival Countdown Teaches kindergarten, 1st, and 2nd grade math concepts, facts, and thinking skills necessary to build confidence and develop a strong, lasting understanding. Balance laughs, big and small, at the Giggle Factory, and learn the concepts of greater than, less than, and equal to. Learn about sorting, classification, and Venn Diagrams as you park bumper cars where they belong. Make bubbles go flying in ones, tens, and hundreds. Trade clusters of bubbles for one of the next larger size. Windows XP, Vista, 7 (32-bit Only)