辽宁省大连铁路中学2013-2014学年高一英语课件： Module 5 listending and writing (外研版必修1)精选.pptVIP

* * * * * * * * Listening and Writing …Where do we go from here? …Keep the noise down… …You’ve got it… …Go ahead… …It is your turn… Everyday English conversation Numbers Metals Equipment Listening Aim: To find out if there is a xkchange in weight when the metal magnesium burns in air. Can you predict the result? Listening Listen to the conversation and answer the questions 1.Was your prediction correct? 2.How much more/less does it weigh than before? 1.5 gram more Aim: to find out if there is a change in weight when magnesium burns in the air. Apparatus: Method: First, _____the magnesium ___the crucible. Then, put the crucible on the _____ and _____it. Next, _____the magnesium.______ the Bunsen burner . After that, _____the crucible over it. Finally, ______the magnesium again. Result: It weighs a little _____than before. Conclusion: Magnesium, Bunsen burner, a balance, a crucible put in balance weigh heat Light hold weigh more There is a change in weight when Mg burns in air. B F A G C E D squeeze …pour… in a container dip… write… blow…to… light /turn on… heat… …appear Writing: Experimental Report Aim: to write a secret message Apparatus: Method: First…Then…Next…After that…Finally… Result: Conclusion: Lemon juice can react with oxygen and produce brown oxide . What have you learnt from this lesson? Homework: Preview the grammar part in this module Numbers 555,555,555,555 3/4 is the same as_______ 1/3 is the same as_______ What is 10% of 800,000,000? Metals K Ca Na Zn Mg Al Ag Fe Cu Equipment * * * * * * * * * * * * * * * * * * * *