Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

This science fair project idea investigates how color affects temperature.

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

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

In this project children practice the scientific method while playing with puffy paint.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This science fair project idea compares biodiversity between drops of water.

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

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

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

In this science fair project, students use the streak test to tell minerals apart from each other.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Discover flight initiation distance as you play around in the park with this fun bird watching project!

This science fair project idea explores how length affects the weight a bridge can hold.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.