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.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

This project examines whether people's taste perception is influenced by what they see.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

In this design challenge, your child will create a parachute for a small toy using typical household items.

The objective of this science project is to determine the length of time for different seeds to germinate.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

In this fun activity, your child will create their very own solar oven to bake s'mores!

This science fair project idea investigates how the shape of an object affects drag.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

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

Will the shape of an ice cube impact how fast the ice melts?

Find out whether a longer airplane will fly farther or a wider paper airplane.

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.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

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.