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.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

In this experiment you will replicate the mummification process by making a hot dog mummy.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

This science fair project will help students learn about non-vascular plants, such as mosses.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Nature is the greatest teacher, and you can help facilitate the lesson! Here's how to create a supply backpack to get your kid ready for science action!

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This science project allows students to study the psychology of happiness.

This project determines what category of person is most likely to be ticklish.

Teach your fifth grader about the wonders of wind by making and observing this winter wind chime.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

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.”

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

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

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.