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.

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

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

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.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

This science fair project idea examines liquids of different densities.

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.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

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

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

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

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

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

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

This science fair project idea explores the different properties & interactions of sugar molecules.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

Test whether plants can grow without sunlight and water.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

This science fair project idea determines if the color of light affects the growth of plants.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

How do organic materials become soil? This science experiment measures what materials biodegrade.