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在日常教学中,经常会遇到这样一种情况:当学生通过充分思考,离结论还差一步时,下课时间要到了;一般学生通过思考已经得出结论了,而后进生却离结论还差一步,可这一环节教学时间已到。该怎么办呢? “抢三十”是民间流传的一种数学游戏。今天的活动课上我把这个游戏向学生作了介绍。游戏规则是:两人轮流报数,每人每次只能报1个或2个。如第一个人报1或1、2,第二个就可以报2或2、3,或者3或3、4。这样继续下去,谁报到30,谁就获胜。
In everyday teaching, we often encounter such a situation: When students fully think through, one step away from the conclusion, the class time will come; general students have come to a conclusion through thinking, but later students are still far from the conclusion. One step, but this time teaching time has arrived. How to do it? “Grabbing thirty” is a mathematical game that is spread among the people. In today’s activity class, I introduced this game to students. The rules of the game are: Two people report in turns and each person can only report one or two at a time. If the first person reports 1 or 1 or 2, the second person can report 2 or 2, 3, or 3 or 3, 4. If this continues, whoever receives 30 will win.