The assignment involves two components
The Excel spreadsheet (version 5) can be downloaded from here as a self-extracting Windows 95 zip archive, it occupies about 40 k. Mac users click here for advice. After downloading the file 'smog.exe', double-click on the icon and follow the instructions that appear on the screen.
When you complete a quiz you will be given a clearance code which you should note down for later use on the clearance page. At the end of the set of quizzes you should print out a copy of the clearance certificate and hand this in to your teacher as proof that you have completed the activity.