七年级数学随堂反馈

七年级数学随堂反馈

《一定能摸到红球吗》是北师大版七年级上册第七章第一节，这节课是初中数学“概

率”部分的起始内容，有着非常重要的地位，应该引起学生的重视。本节课首先通过摸球活动激发学生兴趣，同时引出新课内容，进而判断事件类型，并不断渗透可能性。在教学过程中，学生要经历操作与思考、表达与交流等过程。学生分组合作是完成本节内容的关键，因此要注意调动学生的积极性。

初一学生已具备了一定的学习能力，能知道生活中的一些常见现象，能对生活中的常见

现象发生的可能性进行一定的分析和判断，但缺乏系统知识来规范。

初一学生性格开朗活泼，对新鲜事物特别敏感，且较易接受，因此，教学过程中创设的问题情境比较生动活泼、直观形象，且贴近生活。由于学生概括能力较弱，推理能力还有待不断发展，很大程度上还需要依赖具体形象的经验材料来理解抽象逻辑关系。所以在教学时，可让学生充分试验、收集、分析，帮助他们直观形象地感知。

一、知识与技能

1、通过丰富的实例认识生活中的必然事件，不可能事件，不确定事件。

2、知道事件发生的可能性是有大小的。

二、过程与方法

1、经历猜测、实验、收集和分析实验结果等过程。

2、初步体验有些事情的发生是不确事定的。

三、情感、态度与价值观

在有趣的问题中体会确定事件和不确定事件，提高学生学习数学的兴趣，积累丰富听数学活动经验。

教学重点：通过学生参与实验，让学生认识确定事件和不确定事件。

教学难点：正确区分确定事件和不确定事件，明确不确定设计的特点，感受不确定性。

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