This is an updated version of a very traditional learning center that I've been using for years. All you need are some plastic clothes hangers and clothes pins. The possibilities for instruction and play are vast with this product. Print and assemble the hangers and use clothes pins to create numbers for matching, fact families, addition problems, subtraction problems, etc. Enrichment and Acceleration are easy with this activity. It is easy to build on the Common Core standard for Kindergarten which is simply matching and understanding "How Many". I hope you enjoy using this product as much as my students have enjoyed using them.