Learning Advantage Foam Ten Frames (4 Pieces) | Using ten frames can encourage subitizing help develop a sense of magnitude show one-to-one correspondence build number sense improve understanding of base ten and demonstrate strategies for composing and decomposing numbers. Ten frames are a versatile tool for addressing individual state standards as well as addressing the CCSS. Great for developing number sense within the context of ten. Includes 4 interlocking foam boards with 40 two-color foam pegs.