Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

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

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

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 fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

Learn whether writing things down really makes things easier to remember.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

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

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

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.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

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

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

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.

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.

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