The Little Dipper is the perfect example of a "Kiddieland" coaster with a simple loop that goes down, up and around. Just like the real thing, once the car reaches the top of the initial hill, it is designed to traverse the whole track back to the starting point, using gravity and potential energy in the most fun way possible. This roller coaster model is very mechanical in operation, with a gear shaft and crank to create that thrilling sense of the initial hill climb and a unique smoothly-operating track system for the downhill and thrills to follow. Details: Little Dipper roller coaster theme 19" length 332 pieces STEM teaching opportunities Quick assembly with high play value Compatible with the world's leading building block system For ages 10 and up