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复习目标1.系统整理学过的图形,沟通各种图形之间的联系,体会点、线、面、体之间的关系,构建各种图形之间关系的网络。2.能区分直线、线段和射线,体会两点之间线段最短。3.理解平行、相交关系,能够在生活中找到相关的应用,并能作出合理的解释。4.结合具体情境认识角,能辨认直角、锐角和钝角,会用量角器画指定的角。5.在观察、操作、活动中复习长方形、正方形、
Review the objectives 1. System finishing learned graphics, communication between various graphics, understand the relationship between point, line, surface, body, to build a network of relationships between various graphics. 2. Can distinguish between straight line, line and ray, experience the shortest line between two points. 3. Understand parallel, intersect relationship, can find relevant applications in life, and can make a reasonable explanation. 4. Combination of specific situations to recognize the angle, can be identified right angle, acute angle and obtuse angle, will use the protractor to draw the specified angle. 5. In the observation, operation, activities review rectangular, square,