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?

Archimedes

②Who wrote a book explaining how animals and plants developed as the environment changed?

Charles Darwin

③Who invented the first steam engine?

Thomas Newcomen

④Who used peas to show how physical characteristics are passed form parents to their children?