平面图形是《图形与几何》领域的重要内容,教学中要让学生经历观察、操作、推理、交流等活动,探究图形性质及其变化规律,丰富活动经验,发展空间观念。方格图就是一个有效载体,它不仅使抽象枯燥的数学变得形象、具体、可测,充满乐趣,而且有利于学生利用已有的经验对静止的平面图形进行动态地思考,将观察、想象、推理、表达等有机融合,促使空间观念的发展。一、在平面图形测量教学中有效运用“方格图”点、线、面是构成平面图形的三大要素。在平面图形的 Plane graphics is an important part of the field of “graphics and geometry.” In teaching, students should observe, operate, reason and exchange activities to explore the nature of graphics and their changing patterns, enrich their experience in activities and develop concepts of space. The grid graph is an effective carrier. It not only makes abstract and boring mathematics become vivid, concrete, measurable and full of fun, but also helps students to use the existing experience to think about the stationary planar graph dynamically, and to observe and imagine , Reasoning, expression and other organic integration, prompting the development of space concept. First, the effective use of plane graphics measurement teaching “grid chart ” point, line, surface is the three elements that make up the graphic. In a flat graph