Perfect for counting, measuring and patterning, these cubes come in a convenient storage tub with an activity guide. These cubes will help in the following developmental skills: counting, fine motor, equivalency, comparisons, math concepts, visual attention, problem solving, visual processing, attention to detail, sequential thought, size discrimination, memory and recall spatial relationships. Details: 10 colors 1 cm (1 g) each For counting, measuring and patterning 500 pack Plastic For ages 6 and up