This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

This project compares the strength of one, two, and three-ply toilet paper.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

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

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

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

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Plants and light seem to be good buddies, but how far does the friendship really go?

The objective of this science project is to determine the length of time for different seeds to germinate.

Test whether plants can grow without sunlight and water.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

This science fair project idea explores how length affects the weight a bridge can hold.

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

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

This science fair project idea investigates the difference in reaction times between boys and girls.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project idea investigates if fats add to the flavor of food.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project idea investigates how color affects temperature.

In this project students experiment with making music using only glasses of water.

Do you think heat can affect a plant's growth rate?

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

In this experiment we will be determining whether birds prefer certain colors of seed.