Here are four chocolate bark ideas to prepare with your kids that everyone will love.

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

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

Test your kid's knowledge of presidents one through forty-four with this fun and educational matching game!

Celebrate St. Patrick's Day with a rainbow card filled with three dimensional four leaf clovers!

Get your child thinking about time with this art project, where you'll create a fun book on his daily routine.

This activity with add some fun and education to long car trips. Perfect for family vacations!

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

Invite your fourth grader to celebrate one of four holidays by creating a kid-friendly homemade Menorah, Advent Wreath, Kinara, or Diya!

Get your child writing as she describes the four seasons, then decorates a shape for each to hang in the house!

Ask your middle schooler to figure out what the next 100 days hold in store for him; he'll keep track of daily, weekly, and monthly commitments.

This Presidents Day, meet four of our country's most important heroes with this Mount Rushmore writing activity.

Make a photo book to provide a reassuring guide for your child's first days and weeks of school.

This project determines how much the rebound rates of tennis balls change after ten games.

This science fair project idea determines an average personâs ability to use their anaerobic power system over a period of 2 weeks.

Help your preschooler learn the Four Questions prior to the big night with a homemade book, complete with words and illustrations!

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Dads, this activity's for you. Brighten mom's day with a set of kid-designed "mom coupons" that are sure to keep mom happily pampered for weeks.

Help Mother's Day feel special for weeks and months ahead, while giving your child some good writing practice, too.

Create an organic plastic product using vinegar and cream. Track decomposition over course of several weeks. Compare decomposition with traditional plastics.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Encourage your child to take ownership of a plant by creating a care plan and following it over the course of a couple of weeks.

Get your preschooler ready for kindergarten by helping them learn numbers 1-10 with homemade snowflake counting cards in this arts and crafts activity.

Homemade Halloween treats make great party foods for an All Hallow's Eve get together. These four homemade Halloween treats are scary-good.

In this science fair project, young children will become aware of and have the opportunity to experience the four basic tastes: sweet, sour, salty, and bitter.

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.

Help your child make an imaginative, inexpensive spaceship from recycled materials. When the spaceship is ready, count backwards from ten and then BLAST-OFF!

Serve up this pretend play activity to your preschooler to give her counting skills a healthy boost.