Lesson 20 : How Far is Beijing?

lesson 20 : how far is beijing?
teaching aims(教学目标):
a.teaching aims about knowledge（知识目标）：
    after this lesson, students should do their utmost to know knowledge as follows:
mastery words
edmonton kilometre count 1--10，000数字的表达法
sentences
  a. how far is it from____ to _____?  b. it’s about______ kilometers. / meters.
b.teaching aims about ability（能力目标）：
  they can count from 1 to 10 000
  they can ask how far between different places
c.teaching aims about motion and value（情感态度、价值观目标）：
  raise their capabilty in english, maths.
teaching content(教学内容): p40-41
teaching schedule(课时安排): one
teaching preparation(教学准备):
audiotape, powerpoint
teaching important points(教学重点):
mastery words edmonton kilometre count 1--10，000数字的表达法

sentences
  a. how far is it from____ t