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.

What colors can dogs see? Do they only have black and white vision, or can they see other colors too? Find out in this cool science experiment!

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

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

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Determine which factors promote the greatest memory interference. Administer test, time how long it takes subjects to complete different tasks.

Slime mold is no longer classified as fungi! So what is it? In this cool science fair project, learn how to grow slime mold and explore its behavior.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

The actual factors affecting friction may surprise you! Learn about the coefficient of friction and put some trigonometry into practice in this science project.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

The objective of this science project is to investigate patterns in fingerprints among family members.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

Learn how acid-base catalysis affects enzymes and enzymatic reactions in this science project.

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

Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

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.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.