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.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Examine the effect of pressure on carbonation in soda.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

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 all about balance and motion as your child designs a corn maze!

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

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

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

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

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

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