精选优质文档-倾情为你奉上SpeechGood morning, everyone. I am contestant Feng yanli. Today I am going to talk about “Great inventions”. There are 7 parts in my speech: Teaching Material analysis, teaching aims, teaching emphasis and difficulties, teaching methods, teaching aids, teaching procedures and blackboard design.Part 1 Teaching material analysis This lesson is from Unit4 of book 8 A Oxford English. It is the first part of this Unit. We have learned about computer in Unit3 and computer is