Engineering design projects like this one not only reinforce science concepts but also build teamwork, inspire imagination, promote persistence and are fully engaging. This project requires easy to gather materials and can be done by one individual child or a group of kids. Kids will go through all the steps of questioning "what if. . . .", planning, building, testing, observing and re-designing just like real scientists and engineering. I also love that the lesson and video are also available in Spanish.