Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.

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?

Who needs paint, glitter, or crayons when you have natural art supplies right outside your front door?

Jazz up your patio or backyard with hip and quirky planters made from simple Mason jars.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

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

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

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

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

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

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

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

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

Start your toy engines -- this is going to be a fast and friction-filled race!

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

This second grade arts and crafts activity is all about caterpillars emerging from their cocoons as butterflies.

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

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

This science fair project idea investigates the difference in reaction times between boys and girls.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

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!

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."