No glue or connectors required! Simply stack the precision-cut, solid pine KEVA planks to create buildings, monuments and geometric forms. It’s the ideal activity to help kids gain an understanding of balance and proportion, as well as an interest in architecture, building and design.This kit includes:KEVA Structures 200 plank kit comes with 200 KEVA planks for free-form building and a 24-page, full-color idea booklet with build-out instructions. • Simple building planks that put open-ended STEM play right in kids’ hands!• Gives kids first-hand experience with balance, leverage, geometry and principles of engineering• No glue or extra supplies needed: just unpack and play• Sturdy, long-lasting planks made from solid pine• Use idea booklet for building inspiration, or create your own designs. For Ages 5 and up. WARNING: CHOKING HAZARD - Small Parts. Not for children under 3yrs.