This do-it-anywhere guessing game helps reinforce number concepts. And it's a blast to play.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

This very physical game gets math off the page and into the real world-- and it works on number sense and estimation, key skills for kindergarten readiness.

Whatever is stacked in your cupboard can be used to help your child learn how to compare fractions and decimals. A great hands-on math lesson!

Practice measurement using centimeters in this fun math race designed for your second grade student!

Science fair project that determines the relationship between the temperature and the rate of cricket chirping. How many times do crickets chirp each minute?

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

Help your child practice symmetry with this fun activity that will leave your child with a sweet symmetrical treat!

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

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

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.

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.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

Use playing cards to learn about temperature as well as positive and negative integers in this fourth grade math game.

This Christmas plate features your child's favorite holiday things through drawings. Make a Christmas plate with your child this holiday season.

Have your child construct his own Christmas tree from construction paper while cutting, overlapping and measuring to create an adorable modern design.

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

Forget the measuring stick! This fun math activity uses a body part, your child's hand, as a ruler.

Check out this fun science project idea to explore different types of starches and learn how removing starch affects the quality and taste of food.

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

Countries all around the world have been using the abacus for thousands of years to make math easier. Have your kid make his own abacus to practice arithmetic.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

Measure temperature change over time using a variety of insulation materials. Be creative with insulation materials: scarves, yarn, socks, feathers, oil, etc

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

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

Introduce the idea of measuring weight to your preschooler or kindergartener by making a fun and easy-to-use bungee scale to weigh household objects.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Discover if temperature settings in a fridge make a drastic difference in terms of bacterial growth.

Turn any sunny summer day into a fun and special occasion by having a watermelon seed spitting contest!