长方形和正方形的周长(国外英文资料).docVIP

长方形和正方形的周长(国外英文资料) The perimeter of rectangles and squares Qinyang Experimental Primary School Wang Miaomiao Honorable judges, teachers: Hello everyone！ Today Im going to talk about the topic is rectangular and square perimeter, I will illustrate from the following five aspects: teaching materials, teaching methods, learning method, teaching process, said blackboard design. First, teaching materials The perimeter of rectangle and square is compulsory curriculum standard textbook on the content of the third grade students, this class is in the basis of understanding of rectangular and square planar graph on teaching, this is the first time the students contact perimeter, calculation of all kinds of graph perimeter will play a crucial role. Under the new curriculum idea, teaching goal setting should be based on the students learning process; the development of students, to cultivate students ability; while strengthening the consciousness of application, three effective integration and implementation. Therefore, according to the characteristics of the teaching materials and the actual situation of students, the following three-dimensional goals are set as follows: 1, the students through observation, hands-on operation, cooperation and communication activities to understand the meaning of the perimeter. 2, through the exploration of rectangular and square perimeter calculation process, master rectangle and square perimeter calculation method. 3, the use of rectangular and square perimeter calculation method to solve simple problems in life, so that students feel the close connection between mathematics and life. Teaching emphasis: Understand the meaning of the perimeter and master the methods of calculating the perimeter of rectangles and squares. Teaching difficulties: Can use rectangular and square perimeter calculation method to solve simple problems in life. Teaching aids preparation: Multimedia courseware, rope, ruler, tape, small leaves, small red flag, clocks,