Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

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

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

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

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

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

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

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

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

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.