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In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

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

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

Word color association is just a fancy way to talk about the way we connect colors with words.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

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

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

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

This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

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.

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

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

In this science fair project, students create their own miniature salt flats at home.

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

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.