This project is inspired by the work of artist Janet Saad-Cook, who has been making sun drawings since 1981 and has been celebrated for her contributions to both art and science. To see some of Saad-Cook’s work, visit her website at https://www.janetsaadcook.com/. To make her artwork, Saad-Cook uses sun drawing instruments that she creates herself using reflective materials. The artist positions the sun drawing instruments in sunlight to reflect light onto surrounding objects.

Before you make your light drawing, it is important to know a little bit about light!

What is light and where does it come from? Light is a special type of energy that can travel great distances, bounce off of some objects, and travel through others. Something that light bounces off of is called reflective. Some examples of things that are reflective are mirrors, disco balls, and water! Something that light can travel through is called transparent. Windows, glasses and water bottles are examples of things that are transparent.

Where does light come from? One place that gives off lots of light energy is the Sun. At night time, when the Sun is on the other side of Earth, light can come from man made things like flashlights, lamps, and candles.

Supplies

For this activity, you will need a CD, a light source, and binder clips. You may also want a large sheet of paper, crayons, and tape.

Don’t have some of these things?
Try this:
No CD? Use another disc like a DVD or other reflective materials like small mirrors or foil. Be creative!
Trouble finding a light source? Try using a window, flashlight, the flashlight on a phone or a lamp
No binder clips? Use paper clips or other materials to engineer a way to hold your CD at the angle you like
No paper? Use a newspaper, cardboard box, bedsheet or white wall (just don’t color on your sheets and walls unless a grownup says it is okay!)
No crayons? Use watercolor paint, colored pencils, pens, or markers

Step 1: Gather Your Materials

For this activity, you will need a CD, a light

source, and binder clips. You may also want a large sheet of paper, crayons, and tape.

Don’t have some of these things? Try this:

- No CD? Use another disc like a DVD or other reflective materials like small mirrors or foil. Be creative!

- Trouble finding a light source? Try using a window, flashlight, the flashlight on a phone or a lamp

- No binder clips? Use paper clips or other materials to engineer a way to hold your CD at the angle you like

- No paper? Use a newspaper, cardboard box, bedsheet or white wall (just don’t color on your sheets and walls unless a grownup says it is okay!)

- No crayons? Use watercolor paint, colored pencils, pens, or markers

Step 2: Find a Good Spot

Since you will be drawing using light, you will need to find a spot in your house that either gets lots of sunlight through a window or gets very little light so that your flashlight will shine very bright.

Bring your CD with you to a few areas in your house and compare the brightness of the reflected light in different places. To do this, just point the reflective side of your CD toward the light!

In my house, very little light was coming through the windows today so I had to bring a flashlight into my bathroom and turn all of the lights off to get a really great light drawing.

Step 3: Build a Light Drawing Device

It’s time to think like an engineer and experiment with different ways to build a light drawing device! To make ours, we clipped binder clips to the CD to help it stand up and pointed a phone flashlight at the CD so that the light reflected onto the wall.

What colors do you see? What happens when you move your CD around and point it in different directions? What happens if you move the flashlight?