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

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!

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

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

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.

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!

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.

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

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

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

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

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.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

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.

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