Curve Blocks invite open-ended play. While building with curves, children not only develop spatial awareness. They also build eye-hand coordination, fine motor, language, and math skills. Furthermore they learn to plan and problem solve as they explore dimensionality. Using only one cylinder and nine curve blocks. As they play, they experience differences in height, circumference, and diameter. Ultimately arranging nine curves to create three concentric circles around the center post. Moreover learning about halves, thirds, and quarters as they construct the rings. Curve Blocks also invite flights of fancy. As children mix, match, and rearrange blocks to suit their creative impulses. At the intersection of science and art, varying shades of green raise awareness of different shades within one color.