Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

How powerful is the reaction between baking soda and vinegar? Find out here!

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

Examine the effect of pressure on carbonation in soda.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

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

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

This science project allows students to study the psychology of happiness.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

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

The goal of this project is to create an exciting topographical map out of dough.

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

This science fair project idea determines if the temperature of rubber effects how high it bounces.

This science fair project idea determines the most effective method of preserving food.

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.

This science fair project idea investigates whether plants can survive being frozen.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

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!

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.