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.

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

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

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

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

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

How powerful is the reaction between baking soda and vinegar? Find out here!

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

This activity is a great introduction to polymer chemistry. It might seem complicated, but all you'll need is the material found inside of a baby's diaper!

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

What do you get when you combine science and fairies? Fairy scientists who make their own potion, of course! This activity promotes critical thinking skills as your child mixes, experiments, and creates their very own fairy potions.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

Teach your first grade scientist the difference between liquids and solids using maple syrup.

Show your child how to concoct a simple duo of household ingredients that changes color as acids and bases are added!

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!