Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

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

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

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

In this fun activity, your child will create their very own solar oven to bake s'mores!

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Looking for a fun summer adventure? Learn what it was like to be a prospector during the California Gold Rush by panning for gold in a local creek.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

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

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

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

This science fair project idea investigates how color affects temperature.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

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

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

This science fair project idea experiments with spinning color wheels and optical illusions.

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

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.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!