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Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

Take a dive into the candy jar with this yummy science experiment.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

The objective of this science fair project is to examine the cleanliness of salad preparation techniques.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Science fair project that uses iodine vapors to develop latent fingerprints on a non-porous object.

Find out which kind of bubble wrap fares best when put in impact.

Evaluate gender differences in processing visual information.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

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

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

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

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

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

This science project is to discover which Black Walnut tree tissue contains the most concentrated amount of Juglone, a substance that works like an herbicide.

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

Demonstrate which cooking method gets rid of the most fat.

Design a hearing protection device to protect their ears from loud noises. Examine the properties of current protective hearing devices, materials.

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.