All Design Challenges

Engineer a Balloon Helicopter

Build a balloon helicopter that can fly at least 3 feet from the ground.

Make a Mechanical Leg

Make a ball and socket joint that mimics the movement of a human hip or shoulder.

Camouflage an Animal

Camouflage an animal in any environment so that you can’t see it – even in plain sight.

Build a Cam Mechanism

Create a simple machine that transfers a rotational motion into a linear vertical motion.

Create a Circuit to Light an LED

Build a simple circuit that enables you to turn on a small LED.

Build a Hydroelectric Waterwheel

Design a waterwheel that can generate electricity from the flow of water.

Generate Electricity to Light Up an LED

Design and build a simple generator that turns on a small LED light for at least 1 minute without using a battery.

Build a Joint Mechanism

Turn a straw into a simple machine that works in the same way that the joints in your body work.

Build a Crank Mechanism

Build a simple machine that transfers rotational motion into linear reciprocating motion (repetitive back and forth motion).