This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

This project examines what types of objects burn and which burn faster and cleaner.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

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.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

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

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

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

Discover which fabrics shrink the most in the wash and why.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Find out whether putting something on top of a plant will inhibit its growth.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

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

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

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.

Find out which type of sponge holds the most water.

This project examines whether playing music during class helps students learn or if it distracts students from learning.