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

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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.

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.

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

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

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

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

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

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.

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

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

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

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.

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.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

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

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

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

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

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.

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

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

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.

Give your budding young observers a chance to discover simple machines at use in their own home.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

Help your child learn about animal classification with this fun and delicious activity.

This science fair project teaches students about wilting and browning of salad greens.