A science and engineering kit toy. Good choice for kids age 15+ who loves crafts and science. Fun and entertaining, perfect educational present for school age children that will never go out of style. Designed to improve children's practical ability, and promote their problem solving skills, to motivate children to love science and build children's confidence. You will encounter all kinds of surprises. Detailed guide and instruction included, even beginners can play. Safety tested, all wooden blocks are made of real wood organic without chemical finishing. Non-toxic and non-irritating, it creates a safe play environment.