Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This science fair project idea provides evidence that air is everywhere and takes up space.

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

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

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

In this science fair project, students create their own miniature salt flats at home.

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.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

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

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Take some inspiration from the past and create some wood block prints with your fourth grader.

Learn how to make onigiri, a popular Japanese snack.

This easy strawberry banana smoothie is a healthy treat for kids. Make an easy strawberry banana smoothie for your child for a heart-healthy Valentine's Day.

In this science fair project, students make their own rain gauge to measure rainfall.

Classic meatloaf gets a healthy update with quinoa in place of breadcrumbs.

Help your child get ready for back to school with this fun fifth grade activity, which has him creating an "I'm Studying" door sign.

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Help your fourth or fifth grader design and write their own innovative greeting card by formulating a poem in the shape of their favorite object of choice.

This science fair project idea identifies trees using a dichotomous key.

This science fair project idea determines what household items are good conductors of electricity.

Work on division with remainders in this fun fourth grade math board game.

This science fair project idea determines what household items are good conductors of electricity.

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

Inspire a love for the written word by creating an illustrated nature poetry book with your kids.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.