3rd Grade Science Projects Activities : Page 4

This biodiversity project examines the biodiversity in your own backyard.

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

Science fair project that examines condensation and the conditions needed in order for dew to form.

This science fair project idea investigates the difference in reaction times between boys and girls.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

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

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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

This science fair project idea demonstrates that plants give off water.

This project determines what category of person is most likely to be ticklish.

Make a backbone model to explore human anatomy and life science.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

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

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

This science fair project explores how osmotic pressure forces water through the root up into the plant.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

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

Test whether plants can grow without sunlight and water.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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?

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.