What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

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

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

In this science fair project you will make a model of a cell membrane using very simple material.

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

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.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

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

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

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

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

Using a toy race car kids create a visual model of the Doppler Effect.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

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

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

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

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 physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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

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.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

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.