Build a simple circuit that enables you to turn on a small LED.
Design a waterwheel that can generate electricity from the flow of water.
Design and build a simple generator that turns on a small LED light for at least 1 minute without using a battery.
Turn a straw into a simple machine that works in the same way that the joints in your body work.
Build a simple machine that transfers rotational motion into linear reciprocating motion (repetitive back and forth motion).
Build a redwood tree that is taller than you and that can stand on its own.
Build a device that can map out the shape of the ocean floor.
Design a tool that an astronaut could use to pick up an object in space.
Create a bio-glue that holds together a graham cracker skyscraper.