Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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

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

Determine if gender affects the ability to identify different smells.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

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

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

This science fair project idea explores the different properties of matter.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Using a toy race car kids create a visual model of the Doppler Effect.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

This project explores ways to prevent static electrical shocks.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This science fair project idea investigates the hardness property of minerals.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

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

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

This science fair project idea examines whether boys and girls differ in reflexes.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

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

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.