《The world of science》PPT教学课件(第2课时)

外研版高中英语必修三《The world of science》PPT教学课件(第2课时)，共21页。

Learning objectives

To read the instructions for the experiment

To learn to analyse the structure of an experiment instruction

To learn to write a report of the experiment

Procedure

the correct or usual way of doing sth. 步骤，程序

Remove the shell of the egg.

Carefully pour some hot water into the bottle.

Shake the bottle gently

Pour out the hot water

Quickly put the egg on top of the bottle

写作指导

How to write an experiment report?

1. 审题定调：

实验报告属于说明文体裁，其最大特点就是知识性、严谨性和科学性。它是对客观事实的阐述，措辞应真实严谨，准确恰当。

2. 确定主体内容：

实验报告需要客观地介绍实验的整个过程。可以按照实验目的——实验器具——实验方法——实验结果——得出结论的顺序依次进行说明。介绍实验步骤时，可适当使用表示顺序的词汇，使叙述条理、清楚。

3. 确定人称、时态：

描述实验时，时态用一般现在时，人称用第三人称单数。

4. 核定表达：

实验目的：in order to find ...; The aim of the experiment is to find ...; with the purpose of discovering ...; do research on ...

实验器具：beaker; Bunsen burner; crucible; glass rod (玻璃棒); iron nail; test tube; tong; balance; ...

Homework

Write a report of an experiment that you ’ve learned in your chemistry or physics class. If necessary, you can turn to the Internet for help.

If you can ’t think out an experiment, here is a very simple one for you to refer to:

哪个瓶子滚得快？

两个完全相同的玻璃瓶，一个装满沙，另一个装满水，放在同一斜面上滑下，哪个瓶子滚得比较快？动手试试，想想看，为什么？