【比教学】《弧长和扇形的面积》说课稿 蒋圣标_教学资源_教学科研_江陵县熊河镇初级中学（[teaching] than the arc length and the fan-shaped area releases Jiang Shengbiao _ teaching resources _ teaching and research _ Jiangling County town junior middle sch.docVIP

【比教学】《弧长和扇形的面积》说课稿 蒋圣标_教学资源_教学科研_江陵县熊河镇初级中学（[teaching] than the arc length and the fan-shaped area releases Jiang Shengbiao _ teaching resources _ teaching and research _ Jiangling County town junior middle sch [teaching] than the arc length and the fan-shaped area releases Jiang Shengbiao _ teaching resources _ teaching and research _ Jiangling County town junior middle school bear Current location: Home teaching, research - teaching resources Date of publication: November 9, 2011 editor: admin has 21 readers who have read this article [font: large, medium, small] [comparison teaching] arc length and fan-shaped area, lecture notes, Jiang Shengbiao Lecture notes on the area of arc length and fan Bear River High School Jiangshengbiao First, teaching materials: 1, the status and role of teaching materials The teaching content of this class is a compulsory curriculum standard textbook, teaching nine grade twenty-fourth chapter circle in the arc length and fan-shaped area, this class is a student in the school is finished before the circle of understanding, related with circle position and multiple edge shape and circular on the basis of the expansion and extension. The lesson in the senior high school entrance examination, accounting for a certain score, a bit of magic in this section is to win for the senior high school entrance examination, the formation of knowledge, the creative use of materials, the use of dynamic interpretation of the arc length and the fan-shaped area, let the students experience the process of knowledge formation, to pave the way for the students with dynamic effect mathematical problem solving learning. 2, teaching objectives According to the new curriculum requirements, mathematics teaching not only to impart knowledge, but also pay attention to students in the study of the emotional attitude, to help students understand themselves and build confidence. Knowledge and ability: (1) deducing the formula of arc length and sectorial area. (2) the