[教学片断](第一次执教)师:欣赏完钟表再请大家想一想,有没有办法让我这只没有电池的钟动起来呢?生:装上电池。师:这是个好方法,但是现在已经上课了,不能出去买了。生:用手把指针拨动起来。师:那我试试看。哦,这个方法确实不错。师:说一说钟面上的什么动起来了?生:两根针。师:像这根又短又粗的叫做时针,这根又长又细的叫做分针。师:把你钟面上的分针和时针指给同桌看看。(学生活动。) [Teaching pieces] (first coaching) division: enjoy watching the clock and then please think about it, there is no way to make my only no battery clock up? Health: put on the battery. Teacher: This is a good way, but it is now class, can not go out and bought. Students: hands to dial up. Teacher: Then I try. Oh, this method is really good. Teacher: Let’s talk about what moves on the clock face. Students: Two needles. Teacher: Like this short and thick called the hour hand, this long and thin called the minute hand. Teacher: Point your minute hand and hour hand to the same table. (Student Activities.)