This set includes 250 transparent counters designed for classroom activities, counting, sorting, bingo games, or sensory bins. The hands-on manipulatives support learning in counting, sorting, grouping, addition, and subtraction. Their transparent design makes them compatible with overhead projectors. These counters can be combined with other sets for expanded play options. Suitable for ages 5 and up, they help develop foundational math skills applicable to STEM fields. Learning Resources, established in 1984, provides educational tools trusted by teachers and parents.