Great scientists（Period 1 Welcome to the Unit ）
key phrases in this unit: put forward, know about, look into, in addition, prevent sth.from doing, lead to, make sense, punish sb.for, suggest doing sth.steam engine, draw a conclusion, link...to..., be strict with, lead to, point of view.key sentence patterns: 1 but he became inspired when he thought about helping ordinary people exposed to cholera.2 he got interested in two theories explaining how cholera killed people.3 only if you put the sun there did the movements of the other planets in the sky make sense.grammar in this unit: past participle used as attribute and predicativeability aims: 1.to talk about great scientists and their great achievements.2.to guess what will be talked about in the listening materials.3.to improve their reading skills.4.to learn to use past participle as attribute and predicative.emotion aims: to encourage the students to learn about some great scientists and their great achievements and how science helps to improve our society and change our life.meanwhile, inspire the students to learn from the scientists and form their positive attitude towards science.period 1 welcome to the unit
the general idea of this periodthe unit centers on“great scientists”.this is the first period of this unit.during this period, the students should be encouraged to give their previous knowledge of some of the famous scientists, participate in the activities in class and try to get more information from the discussion.they will take part in different forms of activities, including pair work, group work, competition, and quiz.group competition will be carried out all through the class.words and expressions in this unit will help the students to talk about the topic“great scientists”.so at the beginning of this period, the teacher should spend some time training the students to read them and help the students pronounce them correctly.the students are encouraged to learn the new words in groups by themselves, using dictionaries and other reference books.then more time should be given to the students to get familiar with the words and expressions.lastly, several sentences will be given to the students to help them to know how to use some of the phrases.this unit is about“great scientists”, so from the very beginning, the teacher can encourage the students talk about their dreams in the future.then the teacher can let the students brainstorm something about great scientists.the students are free to say anything that they know.the students will be quite interested in this topic.this activity gives the students a chance to express their feelings about their favorite scientist.at the same time, this activity can stir the students’ enthusiasm in science.