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 experiment will determine how different kinds of light affects the strength of bakerâs yeast.

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

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.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

This social science experiment assesses whether the timing of peak mental performance shifts from afternoon to morning as we age.

Free science fair project idea examining how different types of water affect plant germination and growth.

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 project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

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

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This experiment will explore the possibility of creating an infinite object by hand.

The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

Demonstrate and explain holographic technology. Determine if a holographic image of a magnifier still magnifies the object beneath it. Explain the effect.

Science fair project that demonstrates that rotting food attracts insects that lay eggs on it.

This project investigates whether chewing gum can help a majority of people with focus and concentration.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

This science project involves comparing the relative effectiveness of salt, pepper and dehydration in food preservation.

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

This science fair project idea demonstrates sonar mapping of the ocean floor.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

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

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

Investigate the kinds of memories we tend to store and the emotions we store with them. Determine if memories have a strong emotional component.

Science fair project that examines condensation and the conditions needed in order for dew to form.