Protect the marshmallows! Groups create contraptions that will keep marshmallows in a cup, even after dropping them from a certain height. This is a fun way to model the shock-absorbing capabilities of spacecraft.

Could you reinvent the light bulb? Scholars tap into their inner Thomas Edisons to build a light bulb prototype out of a jar and some wires. They see how long the filament wire glows in the jar (batteries not included) to measure their...

Just this once, it's okay to throw things in class. Out of craft sticks and rubber bands, pupils build catapults to launch an object of choice. This can be a ping-pong ball, a marshmallow, or any other small item. As long as it hits the...

Put your heart into it. Scholars design and build replacements for mitral heart valves. Obviously, they can't test their creations on a real heart, so a box with marbles (to represent blood cells) will suffice.

Convey your interest in conveyor belts. By considering different size tubes, groups create a conveyor belt that can transport boxes of candy at least four feet. Also, the conveyor belt must make a 90-degree turn—quite a difficult task!

Can you do better than a robot? Teams write instructions for a hypothetical robot to build a structure. They test their instructions by acting them out to see if they produce the desired structure.

There's no spin needed to describe the usefulness of a dizzying resource! Using paper plates, DVDs, wooden skewers, and pencils, learners work in teams to create spinning tops. The longest-spinning top wins.

Harness the awesome power of gravity. Scholars build a zip line to transport a ping-pong ball. The challenge is to get to the finish line in under four seconds. At that speed, individuals better be sure to strap on the harness!

Levitation isn't just for magicians. Pupils design and build a small portion of track for a maglev train using magnets and Lego bricks. The goal is to get the trains to levitate—without using magic!

Save the soup! Scholars devise a flotation device using straws, balloons, foam, corks, and other objects. A can of soup must stay afloat for at least a minute with this device—your dinner might depend on it!

Shake your earthquake-resistant building prototype! Groups create structures using coffee stirrers and clay that can withstand seismic waves. They then test their structures against their own earthquakes.

Here's a lesson that's not for the birds! Scholars design and build packaging for soda cans that is environmentally friendly. These packages must be durable, easy to carry, and have no environmental impact.

When is it okay to be suspended in school? When you're part of a human suspension bridge! Learners first model tension and compression in pairs. Once complete, they get together as a class to model a suspension bridge.

Homes come in many different shapes and sizes. Building a model of a geodesic dome is the ultimate goal for the activity. Cutting and folding is the way to go here.

Let's hope there are no leaks. Pupils work together in groups to build a device that will keep as much water as possible in a cup. After being dropped from a height of seven feet! Time to haul out the ladder.

Treat your class to a fun activity, complete with treats. Groups create a solar oven from a pizza box. They then use it to heat up some food ... that's what an oven is for, after all!

Your plants will survive without you. Scholars create a device that can water plants using a coiled string. Along the way, they learn about adhesion and cohesion of water. The challenge is to keep the plants alive for at least a week.

A wind turbine is essentially just a giant pinwheel, right? Individuals first create pinwheels from paper, pins, and pencils. In groups, they model a wind farm along a coast and then test out their designs using an electric fan.

Feel like a rocket scientist for the day. Using only paper and tape, scholars create a framework for a spaceship to Mars. Each sheet of paper costs $10 million and each piece of tape costs $100,000. Make sure you stay within budget!

Create bending joints—but don't break! The activity shows how to make a puppet using straws and fishing line. Pupils create cuts to make joints that rely on the elasticity of the straw to bend and return to their original shapes.

Does the position of the clips make a difference? The activity provides directions to build and test a paper rocket. Pupils attach paper clips to the rocket in different configurations and measure the distance the rocket flies each time....

What is black and white and re(a)d all over? Class members build a table out of rolled newspapers. Pupils follow the design process to design, build, and test their paper tables in the second challenge in a series of five.

Reach out and grab something. Given the task of picking up objects at least two feet away, pupils design and build a grabber. The last activity in a series of five challenges requires learners to use information about fulcrums and levers.

Mint candies are good for more than just one's breath. Using basic materials such as mint candies, straws, index cards, and Popsicle sticks, scholars create race cars that meet a given budget as well as design constraints. They perform...