Geoshapes is an exciting geometric construction system for children to explore and discover spatial relationships and geometric shapes. Great for mathematics, science, design or just plain fun. Geoshapes can be used from early grades right through to high school as a STEM resource. This pack consists of 30 pentagonal shapes with internal trianglular interlocking shapes, which simply snap together to create an endless variety of 3D models. Made of tough, flexible, long lasting polycarbonate. All individual Geoshape packs are compatible. Suitable for ages 3 to adult.