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为了更好地了解新教材编写的意图 ,帮助学生有效地掌握新教材解斜三角形部分知识 ,把研究性学习真正落实到实处 ,根据笔者教授该教材的经验 ,特提出指导学生进行研究性学习的几点想法 ,供同行们参考 .想法 1 用平面几何方法证明正弦定理新教材将正、余弦定理及解斜三角形内容
In order to better understand the intent of the new textbook compilation and help students to effectively grasp the knowledge of the new textbook to solve the delta triangle, to truly implement the research study, according to the author’s experience in teaching the textbook, it is proposed to guide students to carry out research study. A few ideas for the reference of their counterparts. Idea 1 Prove the sine theorem using plane geometry method The new textbook will be the positive and cosine theorem and solution oblique triangle content