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

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

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

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.