The content on this page is linked to the video resources of the site. Each examination is available for viewing by you and navigation is provided on the right hand side of this page. Just click on the link and watch the embedded video clip on the site. The clips range in duration from approximately 4 minutes to 12 minutes long. Clicking on the video will start/stop and pause the video at the various stages.
If you require additional aid, why not check out the Interactive Learning Resources Section