Do different types of oil mix or stack? Find out in this science fair project idea!

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

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

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

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Here's a pressed leaf card project that puts science and writing together for your second grader.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Beetles come in many shapes and colors. Here's how your second grade child can create his own beetles to paint and play with!

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

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

In this activity, your child will be challenged to make a tower using paper cups.

This project examines whether people's taste perception is influenced by what they see.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

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.

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.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Using a toy race car kids create a visual model of the Doppler Effect.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!