Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

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.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

This is a fun way to introduce kids to the concept of volume, and give them a quick hands-on activity to boot.

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!

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

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.