Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This science fair project idea explores substances that cause a bubble to last longer.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

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

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.

In this science fair project you will make a model of a cell membrane using very simple material.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

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.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Discover whether cold or hot water from the faucet will boil faster on the stove.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

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

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project idea researches the effects of acid rain on plant growth.

This science fair project idea is develops new or improved paper making techniques and encourages recycling.

This science fair project investigates why the number of visible stars changes from place to place.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

The project is to investigate yeast fermentation and its results on hand of latex balloons.