Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

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

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

Making your own glass cleaner is easy, effective and inexpensive!

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.

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Show your child how to concoct a simple duo of household ingredients that changes color as acids and bases are added!

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.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

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

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.