ETA hand2mind Plastic, Square, Assorted Color Tiles for Counting with Storage Container (Set 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 These bright plastic tiles are durable and easy to clean Tiles measure 1-inch square Includes 400 tiles in 4 colors (red, blue, yellow and green), packed in a convenient storage bin