In this design challenge, your child will make a bottle rocket using typical household items.

Looking for a fun project on energy? Check out this fun elementary school science fair project idea that demonstrates chemical energy in a bottle.

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

This experiment will explore the best way to create a perfect soft-boiled egg.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

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

Demonstrate how to tell the age of an egg without having to crack it open.

This science fair project idea examines the differences between bottle water, filtered water, and tap water.

Explore scientific concepts with this experiment that introduces kids to the scientific method!

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Discover whether cheap saline solution bottle cleans and disinfects just as well as more expensive kinds formulated with different ingredients.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

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

Science fair project that compares tap water and bottled water for the presence of common impurities.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Science fair project that creates fog using bottles of hot and cold water.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

Science fair project that examines how cell membranes allow the inward and outward flow of materials as demonstrated by eggs.

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

Science fair project that demonstrates that rotting food attracts insects that lay eggs on it.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

The thermometer outside is dip, dip, dipping! What kind of clothes will keep you warmest this winter? This project determines which materials insulate best.