PreK & up. Develop understanding of number concepts, basic number facts, number recognition, and subitizing. Activities include recognizing numbers, addition, subtraction, and writing numbers. Ten Frames can be used in many ways. Modeling with the frames, for example, can guide whole class instruction, or activities can be used more interactively with the students in smaller groups. Centers can be established with frames being used to solve assigned problems. This set is a great hands-on tool for individual independent problem solving, providing students with opportunities to build visual models of problems and to display the solutions to those problems. Set includes 8 plastic ten frames, 80 two-color counters, and 16 double-sided activity cards, all packaged in a sturdy, plastic storage container.