media to compare.    (Teacher allows the students enough time to
            prepare. After they finish it, teacher can show the following
            checklist for the students to revise what they have written and make
            some necessary changes. )
            Does your paragraph have a topic sentence?
            Is it easy to understand what you are explaining?
            Do your supporting sentences focus on the main idea?
            Have you used enough examples?
            Does your paragraph have a closing sentence?
            Is your paragraph interesting?
            Check your spelling.
            Does each sentence have a subject and a verb?
            Do the subjects and verbs agree with each other?
            Sample comparison paragraph:
            As two main media, TV and newspaper have much in common. Both of
            them can provide the information needed by people, trying to cater
            for the different tastes of people on all sides of life. Mean while,
            they make money and survive in the society by selling ads. On the
            other hand, it is the difference between them that makes them have
            their own characteristics. TV can “broadcast” the information you
            want while newspaper can’t TV can provide a series of lively
            consecutive pictures while newspaper only has printed pictures on
            it. Most of time, TV offers information for free while newspaper
            costs you money. As to which is convenient, TV is not much as easy
            as to    be taken as newspaper.