Lego 9688 is an educational tool that helps children learn about machines and mechanisms. With this device, children can build a variety of machines, from simple levers to complex gear trains. The device includes a variety of parts allowing children to experiment with different designs and see how they work.

The Lego 9688 is a great way for children to learn about science, technology, engineering, and math (STEM). By building and experimenting with different machines, children can develop their problem-solving skills, critical thinking skills, and creativity. The device is also an excellent way for children to learn about the importance of teamwork and collaboration.