A piece of clear plastic (plexiglas) or glass, 8 x 10", 1/8" thick.
(Home center stores have pre-cut plexi for minimal cost - check where they cut glass. You may use the glass from a cheap 8 x 10" picture frame. If glass, tape the edges.)
Use a permanent marker (Sharpie) to draw two crosshairs on the plastic, a horizontal line and a vertical line crossing at the center of the plane. (See diagram)
Two black “viewfinders,” 8 x 10"
(Use construction paper, poster board, or other board, cut to match your glass/plexi.)
First draw diagonal lines from the corners to find the center as shown. From one, cut a rectangular opening of 4¼" x 5¼" and from the other; cut out a larger opening of 6 x 7 5/8".) See the image.
You may also want to cut a third smaller window, any size, so long as its corners are also on the diagonal lines. Black paper for the windows will be available in class.
If you have any problem obtaining or understanding the materials list, contact the instructor at mmnece@juno.com.