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

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.

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!

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.

The project is to investigate yeast fermentation and its results on hand of latex balloons.

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

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.

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.

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.

This science fair project idea researches the effects of acid rain on plant growth.

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."

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

Determine whether butterflies like to drink sugar water, salt water, or plain water.

This science fair project idea creates cool new colorful fabric pattern designs and experiments with the mixing of colors.

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

In this project, the affect of acid rain is simulated by the acid, vinegar.

Explore scientific concepts with this experiment that introduces kids to the scientific method!

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.