How to playthe animated optical illusions

Press the "Display PDF" button on the page of your favorite Animated Optical Illusions. This will open a link to the PDF file in your browser, which you can then print.

Print the first page, which has the Animated Optical Illusions, on A4 size paper, and the second page, which has the striped moving sheet, on a transparency film.

There is a line at the top of the paper with the Animated Optical Illusions. Fold the paper along this line towards you. This fold will act as a guide when moving the striped moving sheet sideways.

Now, place the striped moving sheet over the paper with the Animated Optical Illusions and move it sideways. Watch as the illustration comes to life and starts moving!