KEVA teaches a basic understanding of physics and engineering concepts. Physically handling the blocks builds a fundamental understanding of quantities, equality, geometry, balance and design. Each kit includes an idea book with concepts to stimulate builders. No glue or connectors required! Simply stack the solid KEVA planks to create buildings, monuments and geometric forms. Loved by boys and girls as young as 5 and as old as 100. All KEVA kits are compatible! KEVA is simple enough for easy builds and more complex designs. Adults can't resist getting in on the fun! Children of all ages can be challenged and successful when building with KEVA planks—it is the perfect family activity!