In this experiment, the weight of aluminum cans will be compared.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

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

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

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

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project idea researches the effects of acid rain on plant growth.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

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

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

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 idea identifies clouds as a means of predicting the weather.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

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.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

The goal of this project is to create an exciting topographical map out of dough.