概率的意义（Significance of probability）.docVIP

概率的意义（Significance of probability） Topic: the meaning of 25.1.2 probability Teaching target: Knowledge and skills 1. know that the frequency of repeated trials can be used as an estimate of the probability of event occurrence 2. understand the meaning of probability in specific situations Reflections on the teaching of two Let the students experience the process of exploration experiment data collection -- conjecture analysis results of random phenomena, rich experience, experience is the probability to describe the uncertain mathematical model of the phenomenon of law. A preliminary understanding of the relationship between the frequency and probability. Three. Solve the problem In the process of group cooperative learning, we can accumulate mathematical activity experience, develop students awareness and ability of cooperation and exchange, exercise the habit and spirit of questioning and independent thinking, and help students gradually establish correct random ideas Emotion, attitude and values in four In the process of cooperative inquiry learning, arouse the curiosity and thirst for knowledge of the students, experience the value of mathematics and the pleasure of study, and teach them through the teaching of probability meaning and infiltrate the dialectical ideological education [teaching focus] understanding probability significance in specific situations [teaching difficulties] a preliminary understanding of the relationship between frequency and probability [teaching aid preparation] one yuan coins, a few pins, multimedia courseware [teaching process] Creating situations leads to problems Teachers question: is there a wonderful basketball game at the weekend City stadium, the teacher hands only one ticket, Jack and Xiaoming are basketball fans in the class, two people want to go. Im very embarrassed, I really do not know the ball to anyone. Please help me think of a way to decide who the ticket. Student: lottery, lottery, game coin,...... A good idea to t