Discover the science behind buildings and bridges with this STEM kit! Experiment and learn with easy-to-follow instructions and detailed explanations of the scientific principles involved. Build up to 6 models, including a house, pyramid, and several bridge types, and test out new knowledge with fun experiments. Let your young engineer don their hard hat for an educational journey! Designed for hours of freestyle creativity with multidirectional pivots allowing kids to build in any direction and angle. Featuring 191 parts, the kit comes with easy-to-follow instructions and an extraction tool for super-fast taking apart. Moreover, the environmentally friendly, toxin-free plastic is designed to last and be reused for years of play. Compatible with all Engino products, it comes with extra online instructions to build up to 9 working models.