初中数学 “全等三角形”单元分析设计(国外英文资料).doc

初中数学 “全等三角形”单元分析设计(国外英文资料) You must know something, or die better. - Roman Roland Junior high school mathematics, congruent triangle, unit analysis, design Congruent triangles this unit first let students know the shape and size of the same graphics, gives the concept of congruent triangles, then let the students to explore the method to determine two congruent triangles, and proved that the use of congruent triangles. The teaching time of this chapter is about 10 hours, and the details are as follows. (for reference only): 1 congruent triangle concept and nature 2 hours 2 triangle congruent decision 6 class hour 3 congruent triangles are applied for 1 hours Summary 1 hours First, the content of textbooks and curriculum learning goals This chapter describes the knowledge structure diagram: The main content of this unit is congruent triangles, which mainly study the nature of congruent triangles and the methods of judging all kinds of triangles, while learning how to use congruent triangles to prove them. This chapter is divided into three sections. The first section introduces congruent forms, including the concept of congruent triangles and the properties of congruent triangles. The second section introduces the judgment method of general triangle congruence. In the third section, the simple geometric problem is proved by the method of triangle congruent determination. The knowledge about the students who have learned the line, angle, intersecting line and parallel lines and triangles, seven grade two textbooks arranged some reasoning content, these are ready for the content of learning congruent triangles. Through the study of this chapter, we can enrich and deepen the students understanding of the graphics already learned (such as two triangles, to meet certain conditions exactly the same, and at the same time to learn other graphics knowledge to lay a good foundation. Congruent triangle is an important tool for studying graphics. Students can master the content