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.

Construct batteries that make electricity from fruits with this fun science fair project.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Will the shape of an ice cube impact how fast the ice melts?

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Construct and experiment with a periscope using reflected light rays to gather an image.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

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.

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

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

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

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.