Introduce children to angles, trajectories and other early physics fundamentals with this crashapult STEM challenge. Hands-on play challenges children to build and complete high-flying obstacle courses designed around core STEM concepts. After setting up their catapults, children send the launch balls flying off walls, over obstacles and toward the set's included hoop target, funnel or goal cup. Along the way, they'll have to use their own trial-and-error, engineering and critical thinking skills to make the adjustments to placement and force necessary to successfully complete the included challenges. Full-color booklet is filled with challenges that increase in difficulty to provide the opportunity for leveled play. In addition to challenging young brains, this activity set also teaches lessons in muscle control. The set's catapult is completely child-powered, and doesn't require any batteries or rubber bands for operation. Activity set is designed for children ages 5 and up.