see whether all liquids evaporate at the same rate. In other words, does water evaporate at the same rate as juice?

Race to double numbers in this competitive card game. Try one-digit or two-digit numbers, or more!

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

In this simple math activity, your young learner will compare two types of Valentine's Day candy using a Venn diagram.

Hone observational skills and introduce the basics of data interpretation with this data gathering activity all about the different colors people wear.

Does your child need counting help? Here's a simple game that kids can do at home to help them practice counting to two-digit numbers.

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

Compare and order numbers and introduce mathematical inequalities in this fun math card game.

In this science fair experiment, high school students determine if all proteins denature at the same temperature.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Create clear sound shakers so your preschooler can observe and compare the different sounds that objects make!

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

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

Engage your third-grader in this version of the classic game and she will get lots of practice using mental math to solve addition and subtraction problems.

Sharing can be a challenge, and division doubly so! Practice halving numbers in this competitive card game.

Head out to the driveway, ball in hand, for a bouncing challenge. Then use those results to make a colorful graph that lets your child compare results.

Your child will practice her counting and number recognition as she matches printed numbers to the same number of repetitions of a simple design.

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!

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

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

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

Combine art, history and food with this unique project! Your child will make her own butters, and learn a little about Colonial history at the same time

A hands-on guessing game that teaches kids to recognize different coins. First graders will learn their money and their math at the same time!

Does your child love toy cars? Here’s a terrific way for them to play with their toy cars and practice number recognition skills at the same time.

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!

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

Calling all power-shoppers! This game is a fun way for kids to learn life skills, and flex their math muscles at the same time.

Making candles from old candles is easy. Recycle old candle stubs to make a "new" candle, and teach your child about recycling at the same time!

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!