Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

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

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Construct and experiment with a periscope using reflected light rays to gather an image.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

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

Discover which fabrics shrink the most in the wash and why.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

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

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

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Find out which type of sponge holds the most water.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Discover how and which salt melts ice the quickest.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Find out whether matte or shiny nail polish lasts longer.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.