Get a handle on early math skills! These double-sided, interactive write & wipe boards are designed to demonstrate fact family relationships. One side features a blank number bond and the reverse is for writing fact families. Great for building addition and subtraction skills, number relationships, and part-part-whole relationships. Boards measure 6.25L x 6.25H Details:Great for building addition and subtraction skills, number relationships, and part-part-whole relationshipsBoards measure 6.25L x 6.25HDouble-sided, interactive write & wipe boards