This science fair project idea identifies trees using a dichotomous key.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

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

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

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

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

In this project, waves of vibrations are experimented with using water in glasses.

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

Construct and experiment with a periscope using reflected light rays to gather an image.

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

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

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

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

By using static electricity generated from their body, a child can cause a small fluorescent lamp bulb to light up!

In this design challenge, your child will create a parachute for a small toy using typical household items.

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.

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

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

In this design challenge, your child will make a bottle rocket using typical household items.

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

This science fair project idea determines if family members can recognize one another using only the sense of smell.

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!

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

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

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!

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

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