Help your kindergarten scientist predict and observe as she explores the science of smell...and have a great time doing it, too.

This science fair project idea identifies trees using a dichotomous key.

This science fair project idea investigates whether rocks containing geodes can be determined from the outside.

This interactive project invites science fair-goers to participate in examination and recording to demonstrate the importance of firsthand observation.

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

Examine the presence of seeds in open fields. Collect seeds on socks by walking through open fields of grass or other growth. Germinate seeds on socks

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

This science fair project idea demonstrates sonar mapping of the ocean floor.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

This science fair project examines how seeds hitchhike on animals and clothing.

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

In this activity, you'll send your kindergartener on a scavenger hunt to find sounds and create a sound recording. Here's how!

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

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.

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 examines how carnivorous plants digest insects, and whether the plant can use nitrogen in the soil to compensate for lack of insects.

Design and build a scale model representing living tree architecture. Then build a full-size version using one or more lives trees, and test your creation.

Science fair project that determines what neurons are, what they do and compiles this vital information in an illustrated book.

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

This science fair project idea produces consumable fresh water from salt water through desalination.

This science fair project idea explores the fastest average speed a human can talk.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.