Let the light shine through! with 6 shapes and 6 colors and lots of basic pieces based on the unit measurement of 1-1/4 inch they're the proper ratio for easy building. (Translucent colors allow light to pass through them; use for color mixing and experimentation; ideal for use for math and science; perfect for building on our light tables; sturdy, Lidded bin for storage) colors and shapes included: colors: red, Blue, green, yellow, orange and clear cube: 30 PCS, 1-1/4 inch cubed cylinder: 20 PCS. , 1-1/4 inch H x 1-1/4 inch D large rectangle: 15 PCS. , 1-1/4 inch H x 3-3/4 inch L x 1-1/4 inch W arch: 15 PCS. , 1 1/4 inch H x 3 3/4 inch L x 1 1/4 inch W right triangle: 10 PCS. , 2-1/2 inch H x 1-1/4 inch W x 1-1/4 inch L isosceles right triangle: 10 PCS. , 1-1/4 inch H x 2-1/2 inch L x 1-1/4 inch W - discount school supply item # LTBLK100.