Celebrate 100 fantastic days of school by creating a school-themed collage with 100 pieces in this unique arts and crafts activity.

This project commemorates the milestone of completing the first 100 days of school, while giving your child a manipulative to practice counting to 100.

This science fair project idea deals with the qualities of shade on a sunny day.

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

Put together a pine forest to help you count down the days until Christmas with your little one.

In this activity, you child will learn about how heat changes food. On the next sunny day, head outdoors to make a treat in an outside oven! Here's how:

Is your third grader bombing around on a bike these days? Here's a way to put all that fun time together with some math learning, too.

This activity turns your kid into the family weatherman. Plus, it teaches him to collect data and begin to understand graphing.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

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

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

Start the new year with this fourth grade math "Calculation Challenge!"

Do a little kitchen chemistry as you make your own bubble solution and bubble-wand shapes!

Plan ahead for summer, by constructing a holiday calendar with your child. A great way to teach kids about time!

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

Help your kindergartener practice counting from one to ten with this fun outdoor activity. Make a "My Backyard Counting Book" to review counting to ten.

Declare a "Pocket Day" in your house and help your child practice his addition skills as he counts how many pockets the family is wearing that day!

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Take paper football to the next level by creating a "field" with objects from around the house. A great indoor and rainy-day activity.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

First grade math includes lots of work with two-digit numbers. Here's an activity to help kids practice recognizing and sequencing numbers from 1-30.

Celebrate the 100th day of school by making a unique work of art using 100 colorful pom poms in this fun kindergarten arts and crafts activity.

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

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!

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.

Make this paper chain calendar and give your child a visual reminder of the passing of time.

Help your first grade scientist learn about metamorphosis by observing the life cycle of some interesting creepy crawlies.