Complete circles with these Curve Blocks. Children will learn about ordering, spatial relations, and how to compare the height and size of each circle. This elegant learning tool deserves a spot in any preschool class or young learners' playroom. As with all Plan Toys, Curve Blocks are made using ethically-produced, all-natural rubberwood and non-toxic water-based paints to create a perfect blend of beauty and function. Recommended for 1 player, ages 3 and up. Package Dimensions: 7.5 in x 7.5 in x 2.25 in Includes 9 Curve Blocks, 1 Cylinder. WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years of age. Imported Material & Care Plastic Spot clean only