Grades PreK & up. March your way to counting and cardinality skills. Use colorful counting ants on soft plastic logs to practice 1-to-1 correspondence, number comparisons, addition, subtraction and so much more. This Junior Set features printed numbers on one side, equivalent ants on the reverse. Set of 20 pieces includes 2 Rods of each number, 1-10, sturdy storage tray and Activity Guide. Rods measure in increments of 1" to 10" long. Also used with Common Core.