T: Good answer. Please scan the text for the given words in Ex2 and try to work out their meaning.

While students are discussing the words, Teacher should walk around the classroom and give necessary help when needed.

Several minutes later, ask students to present their answers either in English or Chinese. Students may even be encouraged to explain the meanings using pictures. Show the suggested answers on the PowerPoint.

Step III Read to learn

Deal with the reading part.

Scanning

Ask students to scan the text and find what exactly global warming is.

T: What is the title of Lesson 1?

Ss: Global Warming.

T: Do you know what exactly global warming is? Please scan the text and find the answer in the text.

Ss: Global warming refers to an average increase in the Earth's temperature.

T: Quite good! Then skim the text and find what human activities are causing global warming.

S: As a result of increased industry, agriculture, the cutting down of forests, the increase in transport and the burning of fuels, nearly 6 tones of carbon dioxide goes into the atmosphere every year for every one of the Earth's 6 billion people. Over the last 100 years, the global average temperature has increased by 1°F. If we continue to produce carbon dioxide and other gases in such quantities, we are condemning life on Earth and should expect severe consequences.

Skimming

Show the following form on the PowerPoint and ask them to work in groups and complete the form.

term definition causes consequences how to solve the problem