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.

Give your budding young observers a chance to discover simple machines at use in their own home.

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

This science project allows students to study the psychology of happiness.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

This project determines what category of person is most likely to be ticklish.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

An home science experiment for older students that teaches about the science behind heat.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

This science fair project idea explores the different properties of matter.

This project explores ways to prevent static electrical shocks.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

This science fair project idea experiments with spinning color wheels and optical illusions.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!