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操作实践为学生提供了探究、思考、交流的广阔空间,既有利于学生思维的激活,又有助于学生更科学地深究现象背后的数学本质。下面,结合两次教学“统计与可能性”一课中的摸球活动,谈谈有效的操作实践给学生带来的情感冲击和思维水平提升的巨大作用。1.这样的操作实践有利于学生的思维训练吗?师:知道布袋中放了什么球吗?各有多少个呢?(学生打开布袋,倒出球,数出袋中有5个红球和1个白球)师:如果从袋中任意摸出1个球,可能是什么颜色?
Practice provides students with a broad space for exploration, thinking and communication, which not only helps to activate students’ thinking but also helps students to study the mathematical nature behind the phenomenon more scientifically. In the following, we will combine the two teaching activities of “ballistics” in “Statistics and Possibilities” to talk about the great impact of effective operational practices on students’ emotional impact and improvement of thinking. 1. Do this practice is conducive to students’ thinking training? Teacher: Know what the ball put in the bag? How many each? (Students open the bag, pour out the ball, the number of bags out of five red balls and 1 white ball) division: If you feel free to play a ball from the bag, what color may be?