Do different types of oil mix or stack? Find out in this science fair project idea!

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

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Determine if gender affects the ability to identify different smells.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

Hunt for natureâs treasure, the many different products made by trees!

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

This science fair project idea explores whether white light can be separated into different colors.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

The objective of this science project is to determine the length of time for different seeds to germinate.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Come take off your shoes and explore with your feet. Your child will embark on a barefoot adventure as he plays with different textures.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

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

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

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

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

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