《生活中的推理》是实施新课标后新增的内容,这节课沿着“情境呈现问题——自主尝试推理——表格方式构建——表格解决问题——思考方法拓展”的主线编写,主要是让学生了解简单的逻辑推理,亲历对生活现象判断的过程,学习进行简单推理的方法和数学表达。笔者努力在教材内容呈现的深度与学生参与面的广度中找到契合点。一方面让学生自主尝试使用各种方式表达推理过程。例如:文字表达、连线、列表,从中体会推理过程中的方法多样性策略,并初步感知列表法 “Inference in Life” is a new addition to the new curriculum. The lesson follows the theme of “Situational Presenting - Autonomous Attentiveness - Form Building - Form Solving - Methodological Expansion” Write the main line, is to allow students to understand simple logical reasoning, personal life experience to judge the process of learning simple reasoning methods and mathematical expression. The author tries hard to find the fit point in the depth of textbook content presentation and the breadth of students’ participation. On the one hand let the students autonomously try to use various means to express reasoning process. For example: text expression, connection, list, from the process of understanding the reasoning method diversity strategy, and the initial perception list method