Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

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

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

In this science fair project, students make their own rain gauge to measure rainfall.

This craft activity encourages kindergarteners to explore measuring. Get ready to measure the fun that your child will have creating his own ruler!

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Invite your second grader to help you measure and mix these fresh, cool concoctions!

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

Have your child observe, measure and record the amount of space objects occupy, and you'll have an inside space explorer on your hands in no time!

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

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.

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

Ready for a game that's mostly about strategy with a little luck thrown in for good measure? Make math fact practice exciting and start rolling the dice!

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Help your child measure breezy weather in her environment by making a wind vane for kids, a simple version of the classic scientific measurement tool.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

What’s the best part of fall? Pumpkins! Use this easy recipe to help your child make some delicious smelling pumpkin play dough. They can use their math skills to measure and mix and then have hours of fun playing!

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Practice measurement using centimeters in this fun math race designed for your second grade student!

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Get your child excited about measuring with this fun and easy household measurements activity.

In this activity, have your second grader practice measuring by finding the height, weight, and length of their most treasured toy!

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

Your child will love these Easter eggs with a soft touch. There are lots of skills at work here, including fine motor, measuring, and patterning!