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【教学目标】1.结合生活情境,认识到生活中处处有角,体会数学与生活的联系。2.通过“找一找”“折一折”“比一比”等活动,直观认识角。3.培养学生动手操作的能力。【教学重难点】通过动手实践直观认识角。【教学过程】一、创设情境,引出问题师:你们知道角吗?在哪些地方看到过角?学生举例生活中看到过的角。师:角的应用非常广泛,角在我们的生活中无处不在。(板书:认识角)二、探究新知师:用草稿纸折一个自己喜欢的角,并把它移到黑板上。
【Teaching objectives】 1. Combination of life situations, aware of every corner of life, experience the connection between mathematics and life. 2. through “find ” “fold a fold ” “than a ratio ” and other activities, intuitive understanding of the angle. 3. Cultivate the ability of students to operate. Difficult to teach】 【practice intuitive understanding of the corner practice. [Teaching process] First, create the situation, leads to the question division: Do you know the angle? In what places have seen corner? Students seen examples of life angle. Teacher: The angle of the application is very wide, angle in our lives everywhere. (Blackboard: Cognitive Corner) Second, explore the new division: a piece of paper with your favorite corner, and put it to the blackboard.