The only construction sticks that connect by snapping into place along evenly spaced increments on each piece. With Junior Geostix kids will improve fine motor skills, create designs, make different shapes and patterns, learn basic angle and measurement concepts and develop creative thinking skills. Encourage early STEAM skills for ages 3+ by constructing 2D objects or creating beautiful designs and patterns. Then use the creations in open-ended role play! The brightly colored sticks snap together, making them an ideal way to develop coordination and attribute identification skills. Curved pieces include angle markings and straight pieces include length measurements in centimeters. Sizes range from 1.25" to 5.25". Each set includes 160 GeoStix in 7 sizes and 7 colors, conveniently packaged in a storage jar with lid and carry handle.