This project compares the strength of one, two, and three-ply toilet paper.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

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.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

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

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

This science fair project idea explores the different properties & interactions of sugar molecules.

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

This science fair project idea investigates whether plants can survive being frozen.

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.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

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

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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

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 project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

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

Do you think heat can affect a plant's growth rate?

Explore scientific concepts with this experiment that introduces kids to the scientific method!

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Make a planter full of delicious seasonings and classic grilling vegetables, great for a Fatherâs Day gift or a fun start-of-summer outdoor activity.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.