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.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

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

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

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

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