You know Aardman Animations, don't you? Cheese? Gromit? Were-Rabbits? They've teamed with the Science Museum and Brunel's s Great Britain to create Full Steam Ahead, a free educational app that teaches children about ship design.
In each stage of the app, you're presented with a basic design. It's up to you to iteratively improve that design -- whether for load bearing or stability, and so forth -- to learn about a basic underlying engineering concept.
