6-in-1 Educational Solar Kit from OWI will teach children the benefits of solar energy while they create a toy that is both fun to play with and requires no batteries. Newest member of this popular line is an excellent beginner building kit designed to teach how solar power is used to drive a small motor. Children use the 21 snap together parts (no tools required) to build six different working models including an airboat, windmill, puppy, and two different planes. Assembled Size ( L x W x H / mm): airboat:121 x 61 x 86 windmill:154x 153 x239 puppy:68 x 46 x 64 car:70 x 54 x 34 plane:154 x 61 x 94 revolving plane:218 x 61 x 16