The Nereide attracts tweens and teens immensely. Its varied activities and spaciousness means everyone can be part of play on Nereide. The spinning activities are great fun and vastly train the motor skills ABC of agility, balance and coordination. The sense of balance is fundamental to all other motor skills and makes it possible for humans to manage the world securely. In the early teenage years, the sense of balance needs extra attention due to the rapid physical growth. The Satellite and Musca spinners whirl around when tweens use their muscles and coordination to rotate smoothly. To create a smooth rotation on the Satellite Spinner, users need to consider gravity. This is great for the understanding of rotation principles. The Musca spinner has space for small groups, encouraging cooperation and turn-taking skills.