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

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

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.

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

Science fair project which measures the amount of heat energy released by a burning candle by calculating how many calories of heat it emits.

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

Introduce your child to science with something they see everyday--their shadow!

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

A fun activity for a hot day, this will give young kids a chance to experiment with beginning science and math â and splash around in the process!

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

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!

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

Investigate the advantages of the use of ceramics in engines such as the tiles used in Space Shuttle. Use iron filings and magnets.

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

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

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

Determine whether fresh vegetables have more calories or less calories than canned vegetables.

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

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

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

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

Help your preschooler grasp the concept of ordering and sequence while teaching him valuable vocabulary with simple activities around the house.

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.

Want a fun way to teach your kid to tell time? Making a plate clock is a great way for him to learn how to tell time in a way he'll actually find exciting.

This first grade science activity is great for winter! Your child will grow and observe her own amaryllis bulb, keeping a journal of her scientific findings.

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

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!

Practice conversions within the metric system in this fun math card game for third graders.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.