Product Description ------------------- These brightly color-coded plastic base ten blocks visually represent ones, tens, hundreds and thousands so students can visualize and quickly differentiate place value. The set includes 100 yellow cubes, 10 green rods, 10 blue flats, and 1 red thousand block. These hands-on 1st and 2nd grade teaching tools are designed to last for years of home or classroom use. They're also easy to keep clean. For ages 3+ || Size of thousands cube: 10cm L x 10cm W x 10cm H; size of unit 1cm sides. Safety Warning -------------- CHOKING HAZARD -- Small parts. Not for children under 3 yrs.