"Do you know how far it is from Beijing to Guangzhou?"
Students fully imagine that the distance is far away.
"There is a little ant here, and it took only a few tens of seconds to climb from Beijing to Guangzhou. How did it climb up? "
Students blurted out-"Climb on the map".
Through such a riddle guessing activity process, students' attention is attracted, and the concept of highlighting scale comes from real life.