Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

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

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

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

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Challenge your learner to design and build a city of their own in this creative engineering activity.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Make sourdough bread...and learn some colonial history and modern science in the process!

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

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

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

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.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

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

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.