Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

Reflect on how fast your child has grown this past year with this ruler frame craft, perfect for gift-giving!

This craft activity encourages kindergarteners to explore measuring. Get ready to measure the fun that your child will have creating his own ruler!

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

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!

Engineers in training can get started with this simple wheel-and-axle construction activity.

This science fair project idea provides evidence that air is everywhere and takes up space.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

This science fair project idea examines whether boys and girls differ in reflexes.

This science fair project idea investigates the difference in reaction times between boys and girls.

Create a string of paper jack-o'-lanterns with this simple Halloween paper craft!

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Use adorable animal photos from books or magazines to make these simple valentines that can be given to classmates or friends.

Work on measurement by sliding cards along a table with your second grader in this fun game. Use centimeters or inches, add up your totals, and see who's won!

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

This science fair project idea produces sounds by creating vibrations using different objects.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Reuse old Christmas cards by showing your fourth grader how to weave strips of them together to create new and unique woven holiday cards!

This science fair project idea produces varying pitches of sound.

Try a fun painting activity this Valentine's Day with your child. He can design abstract art and learn about color theory in an easy way!

Get your child excited about measuring with this fun and easy household measurements activity.

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

This heart chain will help spread the love on Valentine's Day. Help your child make a colorful heart chain for your home or classroom this Valentine's Day.

How much water comes out of snow? Explore this timely question with your kindergarten scientist with this easy winter experiment.

All it takes is some colored felt fabric, a needle, thread, and a few beads and your daughter can make decorative felt pinwheels!

Your child can create a special winter headband with the help of some white felt and a length of silver ribbon.

Don't despair if numerators and denominators seem like a bore to your child. This colorful collage is sure to show him the brighter side of fractions.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

The alphabet is a big learning milestone for most kids. Help your child learn alphabetical order by making a food list in this fun Thanksgiving activity.

Have a young architect or designer on your hands? Here's an easy activity for him to learn the basics of landscape and architecture while having fun!