This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea investigates how color affects temperature.

This science fair project idea investigates how the shape of an object affects drag.

This science experiment tests if dog saliva can really help heal wounds.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

This science fair project idea compares biodiversity between drops of water.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

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 project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

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.

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

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

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.