Practice multiplication facts and geography at the same time in this fun third grade math card game.

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

Here's a math activity that uses coin riddles to help your third-grader improve his coin-counting and logical thinking skills.

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

Counting with one-to-one correspondence is an important kindergarten math skill. This simple activity turns it into a play-anywhere game.

This project examines the concentration of dissolved oxygen in water, with and without oil.

Here's a hands-on activity that first grade use to help kids get a feel for equations. It uses popsicle sticks to practice addition and subtraction!

Show your kindergartener how to count to 100 by tens, and he'll get an adorable cheerio necklace in the process!

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

The crust is fun for kids to mix and roll out, and the filling overflows with vitamin and anti-oxidant packed berries!

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

This experiment researches if you gave different amounts of food to mosquito larvae would they grow faster or slower

Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

Your preschooler will not realize she's practicing her counting skills while playing with this interactive cereal abacus!

Your child will learn more about coins and their denominations as he's asked to identify similar coins.

Help your kindergartener learn to manage a telephone with this homemade keyboard that also helps kids practice letters and numbers.

The garden is the perfect place to practice math and science with preschoolers. Get digging (and counting, sorting, observing at the same time!)

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

This flannel board will give your child hands-on practice with math, but in a fun format, full of ladybugs.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

Do you think heat can affect a plant's growth rate?

Explore the math concept of probability with your fifth grader on "lucky" St. Patrick's day this year!

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

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

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

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

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