约690字。
　　Unit1 《Great Scientists 》教案
　　Reading
　　1．Teaching Aims
　　①Get Ss to improve their reading abilities.
　　②Let Ss know the topic “Great scientists”
　　③Know some important phrases occurring in this reading
　　2．Teaching Procedures
　　Step 1 Lead in
　　Check Ss’knowledge about some scientists and their discoveries.
　　①Who discovered that objects in water are lifted up by a force that helps them float?
　　Aredes
　　②Who wrote a book explaining how animals and plants developed as the environment changed?
　　Charles Darwin
　　③Who invented the first steam engine?
　　Thomas Newen
　　④Who used peas to show how physical characteristics are passed form parents to their children?
　　Gregor Mendel
　　⑤Who discovered radium?
　　Maries Curie
　　⑥Who invented the way of giving electricity to everybody in large cities?
　　Thomas Edison
　　⑦Who was the painter that studied dead bodies to improve his painting of people?
　　Leonardo da Vinci
　　⑧Who invented a lamp to keep miner safe underground?
　　Sir Humphrey Davy
　　⑨Who invented the earliest instrument to tell people where earthquakes happened?
　　Zhang Heng