teaching aims: 1. teach students how to compare information. 2. develop students’ speaking ability by doing question and answers. 3. teach students how to write a notice. 4. develop students’ writing ability by writing a notice to inform their classmates. teaching procedures: i skills building 2 and step 2 step 1 presentation 1 ask students whether they could understand the meaning of each sentence in skills building 2 when they were doing previewing. let them point out sentences that they don’t understand. 2 ask students to read the guidelines and the two points again. write down the two