Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This science fair project idea investigates the hardness property of minerals.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

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 determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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 is a quick, easy science fair project that conveys the idea of density to upper elementary students.

In this science project, the center of gravity is explored.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This science fair project idea is develops new or improved paper making techniques and encourages recycling.

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.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

This science fair project investigates why the number of visible stars changes from place to place.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

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

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.

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.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.