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1、Unit 16Scintists at work,Period 3,Lets study,Task1.Go over the text“Franklins famous kite experiment”,一.Useful phrases in the text a number of experiments do an experiment fly high in the rainy sky get/become charged a great deal of be made of/from fix/fasten/tie to protect from take care that,When
2、I had realized that I could use a kite.,二.Explanation of some sentences,1.Benjamin Franklin conducted a number of experiments in _ he showed _ electricity is.2.Here is _ he described one of his experiments.3.Having realized _ I could use a kite to attract lightening,I decided to do an experiment.,(,
3、),which,what,how,that,_ the first thunderstorm came,I took my condenser to a shed in the field _ I could do my experiment.I was beginning to think _ the experiment would not work.Others followed even before the whole string was wet,and I was able to collect and store a great deal of electricity in t
4、he condenser.The experiment proves that lightening and electricity are the same.,When,where,that,and,(,),Task 2:Word Study,Read the text again and tick the sentences containing the words“charge,conduct,cross,sharp,tear and tie.”,1.In the eighteenth century,Benjamin Franklin conducted a number of exp
5、eriments in which he showed what electricity is.2.The string was getting charged.3.Most kites are made of paper,but a kite made of silk will not tear so soon in weather with rain and strong winds.4.Build the frame of the kite by making a small cross of two pieces of light wood.5.Third,tie a silk rib
6、bon to string,just above the key.6.Fix a very sharp piece of metal to the top of the longer stick of the cross.,Task3.Word Formation:,COMPOUNDS,Compounds are mainly nouns or adjectives that are made up of at least two parts.These parts can be other nouns,adjectives or prepositions.Can you guess the
7、following words?,1.Part1=part of the body used when we walk Part 2=a round thing to play withPart1+Part2=Answer:football2.Part1=something we put on our feet Part 2=a thing piece of ropePart1+Part2=Answer:shoestring,3.Part1=water of ten degrees below zeroPart 2=a medicine to put on your skinPart1+Par
8、t2=Answer:ice cream4.Part1=the colour of most leaves in spring Part 2=the place where the family livePart1+Part2=Answer:greenhouse,5.Part1=opposite of upPart 2=a small cityPart1+Part2=Answer:downtown6.Part1=smaller than the ocean Part 2=all the things we eatPart1+Part2=Answer:seafood,7.Part1=somethi
9、ng you do in your free timePart 2=what is under your feetPart1+Part2=Answer:playground8.Part1=The way into a park or yard Part 2=someone keeping or taking care of somethingPart1+Part2=Answer:gatekeeper,9.Part1=The opposite of white Part 2=A flat and smooth piece of woodPart1+Part2=Answer:blackboard10.Part1=A piece of furniture with four legs Part 2=A game played by hitting a small ball over a net in a field of grassPart1+Part2=Answer:table tennis,Now you try it,Describe the two parts of some compounds,and let your partner guess what it was.,
