This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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.

Test whether plants can grow without sunlight and water.

Has your child ever played weatherman? Try this science activity that lets kids try their hands at observing and predicting the weather.

This first grade science activity brings the green grass of early spring inside while teaching your child about the cycles of growth.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Is it a square or a circle? See if you can trick your friends with this zany science project!

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!

In this project children practice the scientific method while playing with puffy paint.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Teach your child how butter is created by shaking up cream the old-fashioned way.

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

In this activity your child will create their very own marble maze!

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.