In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

In this science fair project, students use the streak test to tell minerals apart from each other.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Examine the effect of pressure on carbonation in soda.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

This science fair project teaches students about wilting and browning of salad greens.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

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

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

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

Let your fabulous crafter use their favorite flowers, fruits and herbs to whip up a delicious perfume that they can proudly present to a friend or a loved one.

Create a bee garden to help shelter bees in your area.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

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.

Take a dive into the candy jar with this yummy science experiment.

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

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.