ETA hand2mind Foam, Assorted Colors, Square Tile Counters for Math Patterns, Counting (Pack of 400) Explore numbers, patterns, measurement, grouping, and more with this set of colorful tiles Tiles can supplement lessons in counting, addition, subtraction, grouping, pattern matching, and more Soft, durable, and quiet foam material Tiles measure 1-inch square Includes 400 tiles in 4 vibrant colors: red, blue, yellow, green