Explore physics and chemistry with these exciting DIY engineering projects. Make a potato cannon and tennis ball mortar; build real robot models using craft materials and parts salvaged from recycled toys; construct a hovercraft, a giant air vortex cannon and much more. Close adult supervision is required for these projects. Set of 3 books includes Backyard Ballistics, Robotics and How to Build a Hovercraft.
Age Recommendation: Ages 10 and up