How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

Cleaning can be a chore, but not with this sudsy experiment!

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

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.

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

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

This science fair project idea investigates the difference in reaction times between boys and girls.

This project examines what types of objects burn and which burn faster and cleaner.

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.

In this science fair project you will make a model of a cell membrane using very simple material.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

This activity challenges your student to use spatial reasoning and computational thinking to program multiple robots.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

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.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

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

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Your child can use leaves and grass to create his own outdoor art in celebration of Earth Day...all he needs are is the great outdoors and some creativity!

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.