Craft like the Colombians did in ancient times and make these line drawings out of twine, rope, or yarn.

Teach your child how to create lots and lots of line designs by wrapping string around wooden blocks, and using them to create line-filled prints.

Check out this interactive number line. It's a great way to strengthen your preschoolers understanding of basic numbers and the numerals that represent them.

Build this game, and give your kid some hands-on practice ordering numbers. Soon your first grade kid will be Master of the number line!

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Got a shoelace? Got a kindergartener? Help your child learn to use the number line by creating one out of a lace.

Encourage your child to take a page from Bridget Riley and the op art movement, and see if she can create an optical illusion in her artwork.

A nonet is a 9-line poem. Like haiku, each line has a specific number of syllables, starting with nine in the first line and ending with only one in the last.

Compare ability of selected materials to block UV-A radiation. Shine black light though glass at detecting beads underneath. Note color intensity.

Construct and experiment with a periscope using reflected light rays to gather an image.

Make interesting art and learn about shapes, lines and patterns by using spaghetti noodles.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

Using only straight-line sewing, your fourth can create a nifty felt pencil case perfect for his busy life.

Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

Create a dramatic, elegant line drawing of a pumpkin in this white-on-black Halloween art project. 

Take a fun and simple look at the concept of parallel lines with your child. This art activity is great for fine motor skills and perfect for Valentine's Day!

Which type of sunglass lenses gives you the best protection from the sun's harmful UV rays? Find out in this cool science project!

Bring the crisscrossing lines of highways and the sprawling webs of metropolitan cities to your dinner table!

Make a beautiful bowl out of printed lines of poetry that you can use to store everything from jewelery to candy.

Here's a creative and engaging activity to get your child on track with that pesky little line.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Is it a bird? Is it Superman? No, it's your third grader's homemade miniature plane zooming across the room on a zip line.

Here's a fun activity that will help your child learn to cut on a line, practice fine motor control, and create a beautiful garland, too.

Play this game to help froggie hop home...and teach the number line to your kindergartener while you're at it!

Vincent van Gogh painted golden hued pictures of the harvest using bold lines and vibrant color. Your child can explore this style of art using oil pastels.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

This improv exercise helps actors learn how to recover if another actor forgets their lines or goes off script, but it can also be a rainy day activity!

Sure, angles can be confusing. Here's a fun activity to brush up your child's knowledge of these geometry essentials.

Science fair project that demonstrates the process known as refraction, which allows glasses and contact lenses to help people with poor vision.