1.Get 1-2 Ss to report to the class information of Copernicus

( Who is he? What achievement did he make? When? …)

3.　　 find out information of Copernicus( Who is he? What achievement did he make? When? …) and find out the names of the nine planets of the solar system. You can try this following website:

Literature/Biographies/Science/Copernicus.htm

http://www.library.rdg.ac.uk/colls/special/featureditem/copernicus

Period 6

Step 1. Warming up

2.　 Review the words for tomorrow’s dictation.

1.　　　 P42 Ex. 2 Translation (on exercisebook)

2.Reading comprehending

1) Q: What is Euler path?

Can you go over it without missing any points or going over a line twice?

　 A　　　　　　　 A 　　　　　　　　A

B　　　　　 C　　　 B　　　　　　　 C　　　　　　　　　　 B　　　　　　 C

Euler said, “If a figure has more than two odd points, you cannot go over it without lifting your pencil from the page or going over a line twice.”

2) underline some useful phrases

3) Try to prove Euler rule

Step 5 Play a Puzzle game (Work out puzzles on 46 or leave it as HW)

Step 6 Homework

1. Background

Leonhard Euler　 (1707-1783)

Born: 15 April 1707 in Basel, Switzerland Died: 18 Sept 1783 in St Petersburg, Russia

Euler was a famous mathematician in the eighteenth century, he introduced a new branch of mathematics called topology. It is a form of geometry that help you understand things by turning them into diagrams.

2.　　　 Listen to the tape twice

1^st listening: find out the answers to Ex3 and Ex 2--à check Ex3

2^nd listening: finish Ex 2

Step 4　 Reading----- Finding The Solution ( P45 )

1.　　　 “Who is Leonhard Euler? What achievement has he made?” Then go over Ex.1 and teach new words

3.　　　 Preview reading P45-46

Period 5

Step 1　 Homework checking

P5, Ex 3., P44, Using structures Ex.2

Step 2　 Lead in

P45, Ex 4 “Can you solve the problem?”

T: Do you know why you can’t go over it without missing any points or going over a line twice?

Step 3　 Listening　 P44

2.　　　 Try P45, Ex 4 (explain)