This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Examine the effect of pressure on carbonation in soda.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

In this design challenge, your child will make a bottle rocket using typical household items.

Have your child kick off their summer vacation by making a miniature water slide!

In this fun activity, your child will create their very own solar oven to bake s'mores!

In this design challenge, your child will create a parachute for a small toy using typical household items.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Challenge your learner to design and build a city of their own in this creative engineering activity.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

This science fair project idea examines the reason boats are shaped and engineered.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.