Kids match an orange to a circle, count cars, complete patterns and more—and gain a solid understanding of early math concepts! Each color-coded set has 20 two-piece puzzles with simple illustrations that give a concrete sense of each concept. Plus, each puzzle is self-correcting for instant reinforcement! Complete set includes all 4 sets shown, for a total of 80 puzzles. Puzzles measure 3" x 9". Each set also available separately.