合情推理就是合乎情理的推理,它是科学发现的常用方法,是创新的基础。本文试以“三角形的内角和”为例,谈谈如何发展学生的合情推理能力。一、鼓励大胆猜想,寻求多法验证“三角形的内角和”的教学,可以先利用学生已有的知识和经验,让学生拿出正方形、长方形纸片各一张,说出它们的内角和都是360°(因为四个角都是直角)。然后,要求学生把两 Reasonable reasoning is reasonable reasoning, it is a common method of scientific discovery, is the basis of innovation. This paper tries to take “the inner corner of the triangle and” as an example, to talk about how to develop students’ ability to reason and reason. First, to encourage bold conjecture, to find multi-law validation “triangle angle and” teaching, students can first use the existing knowledge and experience, let the students come up with a square, a rectangular piece of paper, say their inner corners and are Is 360 ° (because the four corners are all right angles). Then ask the students to put two