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In this activity, have your second grader practice measuring by finding the height, weight, and length of their most treasured toy!

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

How powerful is the reaction between baking soda and vinegar? Find out here!

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

How many steps long is the hallway? Kids put their graph-making skills to work as they make a step map of their own house.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

This measurement activity uses feet to compare objects, but not the ones found on rulers and measuring sticks...the feet on your child's own body!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

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!

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

How much does 100 weigh? Play this fun guessing game with your child to commemorate the 100th day of school.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

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

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

If you love the idea of handing out holiday tins of homemade cookies but you're not a baker, chocolate-covered apples are the perfect solution.

Does your child love learning about dinosaurs? Does he like digging around in search of hidden treasures? In this fun activity he'll do both!

Encourage your child to compare and contrast a wide variety of autumn-themed items by weighing various objects and recording their findings.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This hands-on activity gives your child an opportunity to apply various strategies to solve a problem and to check if his answer makes sense.

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.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?