In order to use this template, you will need a copy of the Adobe Acrobat reader. You can download a copy from the Adobe Website at www.adobe.com.
The downloadable PDF contains three images which you will need to print out onto a sheet of A4.
Cut out the images and place them around a soft drinks can, securing with some glue or a piece of sticky tape. Look at the image straight on. Note how the curved lines become straight.
The first two images are an illusion within an illusion!
Click here to download the file.