Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

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

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

This project compares the strength of one, two, and three-ply toilet paper.

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

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

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

This science fair project idea explores substances that cause a bubble to last longer.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This science fair project idea provides evidence that air is everywhere and takes up space.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

Give your budding young observers a chance to discover simple machines at use in their own home.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

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

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.