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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!

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.

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

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

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.

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.