Age Group: 8+ 4 in 1 different Robots! Meta. 4 can be easily dissembled and reassembled to make any of the 4 models: T-Rex, rhino beetle, drill vehicle, and robot. Meta. 4 introduces robotics to younger children with larger, easier to handle parts. All 4 solar toys are powered by sunlight, so batteries are never needed. Learn by doing. Perfect for young engineers age 8+.