Study the impact of environment on seed germination among three materials: soil, paper towel, and cloth. Note when seeds germinate and how well they germinate

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

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

This science fair project idea measures physical dexterity as a function of temperature.

Learning to identify and categorize different geometric shapes is a big goal for early learners. And your neighborhood is the perfect place to start!

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

Put numbers and letters together -- key kindergarten math and reading skills -- while creating a marvelous game piece for outdoor play!

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

Here's a hands-on activity you can do with your fourth-grader to practice measurement and directly apply the concept of area.

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

The objective of this science fair project is to examine the cleanliness of salad preparation techniques.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

Start the new year with this fourth grade math "Calculation Challenge!"

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

The objective of this science fair project idea is to determine whether frozen vegetables have more nutrients than canned vegetables.

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

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.

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.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

The purpose of this science fair project is to investigate which food wrapping works best to keep refrigerated and non-refrigerated foods from spoiling.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

This project concerns activity happening millions of miles away, on the sun.