This Kindergarten Hands-On Math Kit is perfect for my severely autistic, nonverbal son. It's been extremely helpful homeschooling him. He needs hands on manipulatives, counters, ten frames, a number line, shapes, magnetic shapes to count to understand how to do addition and subtraction problems. The only thing that I wish was different is that the counters with the ten frames were plastic; they are a hard chipboard material. My son is hard on things so plastic would have been better. Having said that, I'm really glad that I purchased this kit.