Vintage Baseball Jigsaw Puzzle 500 Piece Lenticular

Create a robotic racer using the 4M Salt Water Powered Robot Kit This robot kit is a hands-on learning experience that illustrates the value of alternate energy sources The robot is powered by the chemical reaction of salt water and charcoal and is safe and non-toxic This kit contains all the parts and materials needed to create a salt-water powered robot Detailed assembly instructions included Recommended for ages 8 years and up