初中英语教材解读人教七年级上册Starter Unit 1 Good morning

1、Period 1Introduction, Vocabulary and speaking, VocabularyTeaching goals:1. To learn to talk about general science. 2. To learn to say numbers. Teaching important points:To encourage the students to talk about general science and numbers freely in class.Teaching difficult points:To use numbers and th

2、e words related to science and experiments freely.Learning strategies:To enable the students to group the words related to science and experiments.Teaching methods:1. Team work learning2. Task-based learningTeaching aids:Multi-media, recorderTeaching procedures:Step I Lead-in (2 minutes)A simple exp

3、eriment: Pour some vinegar into a glass and add salt. Stir it up. Put about 5 pennies into the glass and count to 10 slowly. Take out the pennies and rinse them out in some water. Admire their shininess! Do you think its amazing? What is it about? Its a simple scientific experiment. If youre interes

4、ted in scientific experiment, after class you can surf the internet, therere many webs offering simple experiments for you to do at home. Enjoy them later. (Show some websites.)Step II New words and Introduction of general science (12 minutes)1. Teaching new words (2 minutes)In the experiment just n

5、ow what apparatus/ equipment did I use?glass, water, vinegar, penny, salt (Teach the students to read some of the new words.)What other apparatus do we often see in a chemistry lab?balance, burner, test tube, beaker, holder, tongs, metal, or some other substances like oxygen, electricity, iron and s

6、o on.Doing experiments is the base of scientific achievements. At the same time, having a good knowledge of general science is what we cant ignore.2. Doing a quiz (4 minutes)So lets do a quiz to check how much you know about general science. Please look at the quiz on Page 41 and finish it quickly.

7、(Ask the students to give the right answers.) I have more for you.1) When we use a burner to heat a metal, will it expands or contracts?2) When we heat a piece of wood enough long, will it boil or burn?3) When we put a small piece of wood in water, will it sink or float?4) When we put iron in ordina

8、ry water enough long, what will happen? It will react with oxygen in the water. 5) Is steel iron? No, its a mixture of iron and other substances like carbon, copper. 6) Substances have three states, what are they? Liquid, solid and gas and water exists as a liquid.7) Is air oxygen? No, its a mixture

9、 of oxygen and other gas.3. Grouping the words (4 minutes)Im very glad that youre so capable. Weve just learned a lot of words related to science. Lets look at the screen and read them again. While reading, try to find the relationship among the words.apparatus, equipment, vinegar, penny, balance, t

10、ongs, beaker, holder, test tubesubstance, oxygen, electricity, steel, iron, mixture, carbon, copper, state, liquid, solid and gasexpand, contract, sink, float, react, existYes, we can group different things according to some relationship. For example, we can group them by how they are formed or how

11、they exist.gas, oxygensolid, copper, iron, steelmetal, copper, iron, steelman-made: steel, tongs, balance, vinegar, electricitynatural: iron, copper, carbonSo, in the field of science, being good at finding inner relationship among things is very important.Choose to do the following:Ill give you mor

12、e words to group them and state the reason. 1 minute later, Ill check the answers. If youre confused with some of the words, please look them up in your dictionaryscientist, robot, heat, electric current, spacecraft, researcher, force, professor, zoology, assistant, chemistry, solar battery, video-t

13、elephone, nuclear physics, gravity, botany4. Consolidating the new words (2 minutes)Option 1Well done. Now use the words weve learnt to complete the sentences. If you have any problems with the new words, please look them up in your dictionary or ask me.balance, boil, electricity, equipment/apparatu

14、s, expand, float, iron, liquid, react, test tube1) You should _ the water before you drink it.2) There is no _ in the wire. Dont worry. You can touch it.3) This science lab has good _ for doing experiments.4) Things _ when they are heated.5) Boats will _ in the water if theyre not destroyed.6) _ can

15、t float on the surface of water.7) Substances usually have three states: solid, _ and gas.8) Many metals can _ with oxygen.9) We use a _ to weigh the fruit.10) _ are used a lot in the chemistry lab.Option 2Raise some questions about general science for the students to discuss and practice using the

16、words learnt above.1. Why can balloons fly into the air?2. Why are fireworks colorful?3. How can we make the plane fly into the air?Step III Saying numbers (25 minutes)1. Reading the numbers (6 minutes)Knowing what things are is one thing, how we measure them is another. How did our ancestors record

17、 how many events happened or how many things there were? (Ask one student to tell the story-knotting the rope.)When there were more and more events or things, do you think our ancestors would lengthen the rope to calculate them? No. And then numbers were invented. Are you familiar with them and do y

18、ou know how to read them? Lets have a try.(Show the following numbers on the screen and the students read them together.)4; four44; forty-four444; four hundred and forty-four4,444; four thousand, four hundred and forty-four44,444; forty-four thousand, four hundred and forty-four444,444; four hundred

19、 and forty-four thousand, four hundred and forty-four4,444,444; four million, four hundred and forty-four thousand, four hundred and forty-four44,444,444; forty-four million, four hundred and forty-four thousand, four hundred and forty-four444, 444, 444; four hundred and forty-four million, four hun

20、dred and forty-four thousand, four hundred and forty-four4,444,444,444;four billion, four hundred and forty-four million, four hundred and forty-four thousand, four hundred and forty-fourLets try another difficult one. Who knows how to read it? 4,444,444,444,444: four trillion, four hundred and fort

21、y-four billion, four hundred and forty-four million, four hundred and forty-four thousand, four hundred and forty-fourCan you find the rules in reading the numbers in English? (thousand, million, billion, trillion)How about Chinese? (wan, yi)Read the notice on Page 42 Learning to learn. Try 4,444,44

22、4,444,444 in Chinese. (四万四千四百四十四亿四千四百四十四万四千四百四十四)2. Reading the fractions (6 minutes)Now lets look at Activity 2 on Page 42, the whole class read the fractions in the box together. While reading, find the rules to say the fractions?1) We use cardinal（基数）number as numerator /nju:mreit/（分子） and ordina

23、l（序数） number as denominator/dinomineit/（分母）. 2) If denominator is more than one, well use plural form. 3) Sometimes we use a dash between cardinal number and ordinal number. Sometimes we do not. Both are right. 4) And remember there are special ways to say fractions like 1/4, 3/4, 1/2Practice readin

24、g the fractions in your students book in activity 2 Page 42. 1 minute later, Ill ask you to read them one by one.Are you clear how we say fractions? There are some challenging ones for you. Think about them carefully and read them by yourself. 13032 123. Reading the decimals (6 minutes)You know 30=

25、. But who knows how we read the second number? We read it thirty point five. Now lets look at the table on the screen to see how we say decimals. Read the decimals by yourselves and try to find the rules.point fivetwo point fiveeighteen point two sevenpoint zero fiveHave you found the rules? (Ask on

26、e student to answer.)We read them as we do in Chinese. 1) Before the point, we read them as we read Arabic numerals.2) After the point, we read the numbers one by one.Now read the decimals.Now please read the numbers as decimals like this:=2=12=A half is the same as/ as much as/ equal to point five.(The students say the following numbers) Two and a quarter is the same as/ as much as/ equal to two point two five.Three quarters is the same as/ as much as/ equal to point seven five.Twelve and three tenths is the same as/ as much as/ equal to t