Design and engineer the tree house of your dreams with this one-of-a-kind building set. Use the included Activity Cards to complete engineering challenges. Build railings, platforms, trees, and then use your problem solving skills to re-engineer your design. Kids will love building their tree house---parents will love that they're actually building critical thinking and STEM skills. Recommended for ages 5 years and older; 52-Piece set includes Activity Cards; Platform measures 5.5' x 4.5'.
