This 6-in-1 DIY solar robot building kit teaches children the benefits of solar energy while they create a toy that is both fun to play and requires absolutely no batteries. An excellent beginner building kit, designed to teach how solar power can be used as an alternative source of energy, children can use the 40 different parts to build six different working robot models, all without the use of any tools. We believe every child has the potential to be a great inventor!