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

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!

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.

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

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

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

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

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

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

The project investigates how friction affects motion by using different surface textures.

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

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

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.

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

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.

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

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

Using scherenschnitte, your science-savvy second grader will be able to create and display each part of a vegetable!

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

In this activity, your child will be challenged to make a tower using paper cups.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

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

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

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!