These materials are from BBC Learning English site. All of them are downloadable and each audio & video material have its pdf file (with transcript and vocabulary). These audios/videos are good for developing students' listening and reading skills, increasing students' vocabulary, and also speaking skills. It depends on the purpose of using this material. For example I used the first one (I haven't used the others yet) "Are men the weaker sex" with my intermediate students. While listening they underlined all the unknown words they had come up with, then we discussed the words together (I explained them in a target language). After, the discussion, I asked them not to look at the transcript and listened to the audio again. At the end of the audio they told me what the audio was about and in this way I could make them speak.