In Unit 4, you will study Topic 13 as your key text. You will work on it in groups of three. The work-flow is as follows:

1. Form your groups.
2. Choose who covers which of the three texts.
3. Listen to and study your texts independently (you can also work with someone from another group) and do exercises C, D, E and F. Also choose ten words out of the vocabulary that you feel are the most important
4. When everyone in your group is finished with their text, work together on exercises 13G, H, I and J.
5. Teach each other the ten words that you chose from your vocabulary.
6. Do this text combing "hand-out": OT5_Text combings_Topic13.pdf​
7. In addition, do exercises 13K, L and M.

Here are the audio files for the texts:
The Future of Food:
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Artificial meat:
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Sea vegetables:
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Insects:
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You will also need to study Nouns and prepositions (pp.230-234).
Here's the audio file for G30: 

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Also, work on these additional exercises on nouns + prepositions: Nouns and prepositions.pdf​