This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

This science fair project idea determines if the color of light affects the growth of plants.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Demonstrate how to tell the age of an egg without having to crack it open.

This science fair project idea determines the most effective method of preserving food.

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

This easy at-home experiment is a great way to "see" science.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science fair project idea examines liquids of different densities.

This science fair project idea produces varying pitches of sound.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

How do organic materials become soil? This science experiment measures what materials biodegrade.

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!

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.