Technical problems?

"You need to upgrade your Adobe Flash Player to watch this video" error [this link takes you to an external website]

You cannot hear the video sound [this link takes you to an external website]. Transcripts have been made available for videos developed by Cats Protection for UFO.

The Q&A sections do not work or you cannot view the House plan - you need to enable JavaScript, support for all web browsers [this link takes you to an external website]

Questions and Answers

What to do next?

Use the menu to your left or the page numbers at the bottom of the page to navigate through the unit.

Throughout this unit you'll see 'Did you know?' and 'Question and Answer' sections like this that will either give you extra knowledge or test you understanding so far. If you need more help you can always access the 'Help' button at the top of each page.