【教学目标】1.认识面积单位公顷,活动感知1公顷的实际大小。2.学会公顷与平方米间简单换算,解决一些简单实际应用的问题。3.体会数学与生活的联系,培养与他人合作的意识和能力,发展学生的空间观念和数学思考。【教学重点】感知1公顷的实际大小,发现平方米和公顷之间的进率。【教学难点】建立1公顷的表象。【教学过程】一、复习旧知,引入公顷1.谈话:同学们,我们学过哪些常用的面积单位,谁来说一说? 【Teaching Objectives】 1. Know the size of an area of ​​hectares, the activities of 1 hectare perception of the actual size. 2. Learn simple conversion between hectares and square meters, to solve some simple practical problems. 3. Experience the connection between mathematics and life, cultivate the awareness and ability to cooperate with others, and develop students’ space concepts and mathematical thinking. 【Teaching】 Perceived the actual size of 1 hectare, found the rate between square meters and hectares. Difficult to teach】 【1 hectare to establish the appearance. 【Teaching process】 First, review the old knowledge, the introduction of ha 1. Talk: Students, we have learned which commonly used area units, who say?