Class opening
For ideas and tips on beginning a class, see “teaching techniques” at the back of this teacher’s guide.
Step1、Listen to the passage in this lesson，and discuss “Why does everyone laugh？How does Brian do the experiment？ Is Danny wet？Why or why not？What’s the conclusions？”Then listen again.
Step2、Ask students to read the text and write out the steps of the experiment in their exercise book.
Step3、Another experiment
1）Read the experiment aboutWeird Mud carefully. Find out “What do you need？What do you do？What is happening？What else can you do ？”
