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because there will be too many cars flying in the sky. S3:… Draw a picture of their inventions and make a card as Kangkang’s. Group work inventions to the front and describe it to the class. T: Who would like to share your invention with your classmates? T: Wonderful invention! Someone else? Step 4: Let the Ss discuss in groups to decide which invention is the most useful/interesting/funny one. T: Now, discuss quickly and decide which is the most useful/interesting/funny invention. T: Whose is the most useful invention, class? T: The most interesting invention? T:.. T: I hope you will work harder from now on. I wish you all success. Take their inventions to the front and describe it to the class. S1: My invention is Magic Pen. It looks like the pen we are using. It’s made of metal and plastic. But it can speak. It is the best “teacher” in the world. It has a brain. It knows all the subject we are learning. Whenever you have problems, you can just press “Help” and it will tell you what to do. S2: My invention is … Discuss in groups to decide which invention is the most useful/interesting/ funny one. Ss: xxx’s Ss: xxx’s Ss:… 9 Summarizing and assigning homework (2mins) HMK: Let the Ss sum up the key points and write them down on the exercise book. T: We have finished this topic. After class, I hope you will sum up all the key points and write them down on your exercise book. Ⅶ . Blackboard design When was it invented ? Section D Words and phrases: explore+er =explorer man+made=manmade guiding marks system as long as Grammar: passive voice am/is/are+pp was/were+pp modal verb+be+pp has/have+been+pp Sentences: …and the stars could be seen. Today, the problem has been solved by… It can also be used to study the shape of the earth.