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Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

This experiment explores how listening in to a one-sided conversation affects concentration.

Science fair project that determines the relationship between the temperature and the rate of cricket chirping. How many times do crickets chirp each minute?

Examine the effect of pressure on carbonation in soda.

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

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

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

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.

Science fair project that compares the relative carbon dioxide concentrations of various gases, including different types of vehicle emissions.

This fascinating science fair project explores eye color genotypes.

Science fair project that determines whether spreading a moss soup over an area increases moss growth.

Examine the connection between temperature and chemiluminescence.

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

This project examines whether more expensive golf balls translate into better results on the golf course.

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

This science fair project investigates which of two learning modes most commonly used in school, visual and auditory, is better for information retention.

The goal of this fun science experiment is to explore the limitations of sight and learn working of the human eyes.

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.

Science fair project in which you will create your electricity by making a homemade battery using salt water, a nail, and a copper wire.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Science fair project which examines how stopping a tomato's ripening process using the enzyme ethylene effects the tomato plant and its reproduction cycle.

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

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

This project analyzes people's emotional responses to images in painting vs similar images in photographs.