Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

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.

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

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

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.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Create a unique and colorful Mother's Day gift that Mom can use all year. Upcycle a tea tin by wrapping it with Washi tape!

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

Show your fourth grader how to embrace a green lifestyle and enjoy the outdoors with a homemade, recycled picnic basket.

This fun activity will have your child creating a Halloween-themed bookmark to use throughout the Halloween season. All they have to do is follow the directions on the legend!

Create a string of paper jack-o'-lanterns with this simple Halloween paper craft!

Help your child plant a "tea garden": a garden made of herbs for making teas.

Learn whether writing things down really makes things easier to remember.

Find out whether putting something on top of a plant will inhibit its growth.

Create some commotion on your table this Halloween with some flying bats that'll be cute enough to cause a ruckus among your little party monsters.

A package of memory wire and some beads are all that your artist needs to make a bracelet. The challenge will be to come up with a design inspired by autumn.

Teach your fourth grader how to craft her own decorative felt eggs, a perfect way to symbolize spring and new beginnings!

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Invite children to create a Fourth of July centerpiece with this simple craft activity!

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

This science fair project idea produces varying pitches of sound.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.