Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

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

Science fair project in which you will start a fire from scratch without using matches or a lighter.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

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

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

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

In this project students experiment with making music using only glasses of water.

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!

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

This science fair project idea produces sounds by creating vibrations using different objects.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

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 is a nifty science experiment using Epsom salts to make "frost" appear on a piece of glass.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!