Optimize learning by having students experience math concepts in a variety of ways with these two mini bulletin board sets. The 21-piece Place Value set helps students understand the meaning of the base-10 number system, learn different ways to represent and write numbers, and practice composing and decomposing numbers to 999. Use the 10-1/2" x 21" number slider to create numbers up to 999 for classroom instruction or student activities. Pieces range in size from 5-1/4" x 6" to 21" x 8". The 40-piece Plane and Solid Shapes set features geometric shapes cards, and photographic images of real-world objects to help kindergartners, first-graders and second-graders make connections between geometric shapes and shapes in the world around them. Pieces range in size from 3-1/2" x 3" to 21" x 6". Interactive teaching tools in these sets are great for use in small groups where students can have hands on manipulation of the pieces.