The solar system

Use your mind map to sum up the text and study it.
If yours is not complete, get my mind map 
Mind map (pdf)

Repeat the topic to yourself and use www.vocaroo.com , an online voice recorder, to record it. Then, listen to the audio file: it is very useful to check whether your presentation is fluent enough or you have to rehearse it a little more.

 

Plug your headphones into the computer's microphone port.
You can listen to the audio file or download it and save it to your computer. 

Let's start our revision :-)