Mark the size of the screen that will display your filter by drawing a large rectangle in the center of your graph paper. This will be the plane you use to build your filter.
Draw an outline of a person’s face in the center of your plane. This will represent the size of a user’s head so that you can design your filter to fit.
Decide what design your filter will have. Some possibilities include a garden of flowers growing at the bottom of the screen, a handful of stars at the top, or a pair of sunglasses to float over the user’s face.
Draw your filter design on your plane using only these three shapes: Rectangles, squares, and circles. Use as many of each shape as you want.
Share your filter with the class!