Core Concepts

Grades PreK & up. Teach and reinforce essential basic skills with these 20 self checking, five-piece simple addition and subtraction puzzles. Center piece of each puzzle features a number with four surrounding pieces that show four different ways to compute that number using addition or subtraction. Unique die cuts on each puzzle makes self correction a snap! These 8" x 8" plastic coated puzzles are durable and easy for small hands to manipulate. Includes an activity guide.

Pre-K & up. Illustrate numbers less than or equal to ten, and improve number sense within the context of ten. Ten-frame activities enable children to think of numbers less than ten in terms of their relationship to ten and to build a sound knowledge of the basic facts which are an integral part of calculations. Suggested activities included. Foam construction, magnetic backing. Set includes four magnetic boards and 80 pegs (40 blue and 40 red/blue).