全单元教案，共8课时，约3060字。

　　Unit 4  Look into science.教案
　　GENERAL OBJECTIVES
　　TEACHING RESOURCES
　　多媒体教学工具；录音机；磁带；投影仪；幻灯片；词汇
　　卡片；挂图等。
　　LESSON 25 Do an experiment.
　　LESSONPREPARATl0N
　　LANGUAGE KNOWLEDGE
　　O掌握词汇及短语：science，experiment，fill，prove
　　O识别词汇及短语：theory，jar，upside，observe，right  side up，upside down
　　LESSONSTRUCTURE
　　CLASS 0PENING
　　Maty report and then do the pair wort going to the zoo and the pet.
　　KEYSTEPS
　　Stepl：Asktheclass todiscussthequestions in“Thint it”，
　　Step 2：Let the students listen to the tape carefully with the following questions：
　　Why does Danny say they should do this experiment outside?
　　What'sBrian's theory?
　　What will Brian do ?(Brian will doanexperiment．)
　　Does Danny have the same theory as Brian's?(No．Brian has one theory and Danny has another．)
　　Step 3：Do the experiment described in the reading．
　　Have the items I have brought to class(the jar，cardboard and bowl of water)ready．Ask two volunteers to come up to my desk．One volunteer gives
　　instmcdons，in English，according to the text。The other volunteer follows the instructions．Then have the class discuss their observations by using what they have
　　learned in this unit．
　　Step4：Play the tape or read the reading again，pause after everyline，and ask the students to repeat(a)in chorus，(b)血smallgroups，(C)individually．
　　Step 5：Ask individual students questions．The students give natural answers，do the exercises 2,3 on the activity books.
　　Step6：Cometo“Let’s Do it”．
　　CLASSCl0SING
　　the St readingin the reader
　　the remaining activities in the activity books.
　　the next reading in the student book
　　LANGUAGE NOTES
　　1．I fill a jar with water．我把广口瓶装满了水。 fill…with:“用……装满”。Be filled with:“充满……”。例如：