It all makes "cents" with this winning set! Enlarged reproductions of U.S. currency and coins make money values, counting, and equivalencies add up to learning fun. Also ideal for teaching addition, subtraction, and other math concepts. Discovery Guide. 52 pieces, up to 13 1/2" wide; equivalency chart is 17 1/2" tall. Ideal for 1st Grade to 12th Grade (Ages 6 to 100).