Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

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

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

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

This science fair project idea explores the egg's thin membrane.

This science experiment has students test whether a snail moves faster on concrete or dirt.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

This science fair project idea determines which method of hand cleansing is the most effective.

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

Explore if planting seeds in a certain direction will affect how fast it germinates.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

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

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

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

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

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

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This science fair project idea investigates if fats add to the flavor of food.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea examines which type of insulation holds in the most heat.

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