Using a toy race car kids create a visual model of the Doppler Effect.

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

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

In this fun guessing game, your child uses his sense of smell and taste to figure out what is in the container. Here's how to play:

Reuse and recycle cardboard tubes to make spooky spiders, kooky caterpillars, wacky worms, and more.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Here's a household scavenger hunt that shows kids the natural sources behind everyday objects...and builds reading skills, too!

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Help your child learn about animal classification with this fun and delicious activity.

For a fun family activity to introduce your child to genetics, have your child go on a search for dominant and recessive family genes!

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Help your child celebrate the summer and the sun by making a sandy seascape.

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.

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

Children are imaginative story-builders. Create a shoebox habitat with your child to put those budding creative instincts to good use.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

This experiment challenges students to forecast the weather based on the surrounding areas' weather.