Unit 3 Developing ideas 课件 2021-2022学年外研版高中英语必修第三册

Unit 3 The world of science Period 5 Developing ideas 1 Who is he? Benjamin Franklin Lead-in Activity 1 Read the introduction to Benjamin Franklin. Benjamin Franklin (1706–1790) was one of the Founding Fathers of the United States and helped draft the Declaration of Independence. Apart from being a successful statesman, he was also well known as a leading American author, printer and publisher, successful diplomat, creative scientist and inventor. His Famous Experiment I assume that Benjamin Franklin is a ... person. In my opinion, maybe he is... Activity 2 Read the passage and find out what Franklin’s experiment aimed to prove. Experiment The kite lightning experiment Aim Material Procedure Conclusion To test if lightning was really produced by electricity. A kite with a string and a metal key First, Franklin flew a kite with a string and a metal key. Then, when a flash of lightning hit the kite, electricity was conducted through the string to the key. Finally, touchin