Analysis od TED video in terms of using one's voice

Andrew Hwenda "Takes a new look at Africa."

I found out that he is really good at emphasizing keywords and conjunctions such as however, because and so on. This makes his points clear and helps his audience's better understanding. Also when he gives us his message at the end he uses pause effectively and put strong emphasises on each word in a sentense. It makes his conclusion stronger and more persuasive.

Richard St.John "8 secrets of sucess"

I thought this presentation is not as good as the one above in terms of using voice effectively but the content was really interenting so I will put it on here too.
Because this presentation is such a short one which lasts for only 3 minutes, he talks really fast. In my opinion, if he puts more pauses effectively before 8 important key words, this would be easier for his audience to follow his points and also be more persuasive.