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Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Learn with makes water molecules work with this fun and easy science activity!

This science fair project idea explores alcoholic fermentation at work by making your own soda.

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

Create your own cloud with an activity that will explain how important concepts such as evaporation, condensation, and precipitation work.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Help your kindergartener expand social studies and science work while creating this lovely bag clip for the holidays.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

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

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

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

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.