高中英语Unit 3 The world of science评课ppt课件

这是一份高中英语Unit 3 The world of science评课ppt课件，共25页。PPT课件主要包含了Part 1，Group work，Part 2，Part 3，Homework，Part 6等内容，欢迎下载使用。
Pre-writing
While-writing
Pst-writing
What safety rules are yu suppsed t fllw in the lab?
Read the instructins carefully and never play with the instruments and mials in the labratry.
Hands-n time
Read the instructins and predict what the result f the experiment is.What factrs might influence the experiment?
Magic bttle
Experiment cnductrAssistantMderatr
Demnstratin
What happened t the egg? Why?
What des the experiment try t prve?
It tries t prve that air pressure des exist!
The egg was squeezed int the bttle.When the temeperature within the bttle cls dwn, the air pressurei in the bttle wuld be lwer than that utside the bttle. As a result, the egg was pushed int the bttle.
Taking ntes
Write an experiment reprt
Cmplete the bxes in activity 5 with the infrmatin in Activity 5 and ur discussin. D further research if necessary.
Language Features f Experiment Reprts
Cncise&Precise
Experiment reprt standards
The reprt desn’t miss any detail f the experiment;The reprt illustrates the experiment accurately and cncisely;The reprt desn’t cntain any spelling r grammatical mistakes.
First Draft
Reading and ding peer assessment
Revising and Editing
There are many scientific principles in the wrld that can be tested by simple and interesting experiments.And tday, I decided t d ne named Magic bttle with the purpse f prving that the air pressure really exists.
…including a biled egg which was nt ht any mre, a transparent glass bttle whse neck was a bit smaller than the egg and sme ht water. When everything was ready, the experiment began.
I remved the shell f…I carefully pured sme ht water… I pured ut the ht water.First f all, I remved the shell f the egg.
S, the experiment prved that the air pressure indeed exists and it is really pwerful.And at the same time, I bserved carefully and recrded what happened.
Reference versin
The experiment is designed t prve whether air pressure really exists. At the beginning f the experiment, I prepared the materials, including a biled egg, a glass bttle whse neck is a bit smaller than the egg, and sme ht water. With all the things prepared, the experiment began.
First, I remved the shell f the egg. Then, I carefully pured sme ht water int the bttle, and shk the bttle gently. After a few minutes, I pured ut the ht water. Just at the same time, I quickly placed the egg n tp f the bttle. T my amazement, the egg squeezed int the bttle at nce.
After the experiment, I can draw the cnclusin that air pressure indeed exists, and it is very pwerful. It is the frce f the air that pushed the egg int the bttle.