Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics 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.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Who knew that you could make beads out of rose petals? Not only can it be done, but the beads smell wonderful!

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 fair project idea determines which method of hand cleansing is the most effective.

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Learn whether writing things down really makes things easier to remember.

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

This science fair project idea investigates the difference in reaction times between boys and girls.

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

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

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.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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

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

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.