一、选择合适的课型第一类是有关公式推导的内容。如教材中关于平面图形的周长和面积以及立体图形的表面积和体积公式的推导等。具体原因为:第一,平面图形和立体图形在日常生活中有相应的实物,学生很容易就能找到进行操作的实物材料;第二,学生能够通过动手操作,形象感知这些几何图形相关公式的推导过程,使学生对知识的来龙去脉了解得更加深刻;第三,运用“学案导学”的教学方式,可 First, select the appropriate type of lesson The first category is derived from the formula. Such as textbooks on the plane of the graphic perimeter and area, as well as the three-dimensional graphics of the surface area and volume formula derived. The specific reasons are as follows: First, the graphic and stereoscopic graphics have corresponding real objects in daily life. Students can easily find the real materials for the operation. Second, students can perceive these geometric related formulas through hands-on operation The process of derivation, so that students have a deeper understanding of the ins and outs of knowledge; third, the use of “case study guide” teaching methods,