《周长的认识》教学设计`反思与点评（Reflection and comment on teaching design of understanding of circumference）.docVIP

《周长的认识》教学设计`反思与点评（Reflection and comment on teaching design of understanding of circumference） Teaching design, reflection and comment on understanding of circumference According to the teaching goal. 1., combining specific things or graphics, through observation, operation and other activities to understand the perimeter. 2., in the specific situation, the perception of girth and the real life of the close ties, the establishment of a preliminary concept of space, training observation ability, hands-on operation ability and cooperation ability. On the analysis of teaching materials. In this part, the teaching of plane figure perimeter is carried out on the basis of students understanding of triangle, parallelogram, rectangle, square and so on. The old material is the calculation of the perimeter of the understanding and arrangement of the rectangular perimeter together, and now we are in a whole class time for students perception of what is the perimeter, the purpose is to let the students in the specific situation, through observation, operation, experience, and fully experience, from the understanding of the meaning of the circumference. On the analysis of status of schools and students. My school is a county primary school, the students are mostly from the units, has a good family background; school is the first-class schools, teaching conditions, teaching equipment, creating good conditions for students learning. And because some graphics are familiar to students, so students learn more smoothly. According to the teaching design. (1) trace and describe 1. students, what season is it now? Autumn is the season when leaves fall. The teacher collected all kinds of leaves pictures from the Internet. Would you like to have a look at them? Please watch (the courseware). Are these leaves beautiful? Do you want to paint their shapes? Please take out a piece of paper, a slice of the love leaves, leaves with markers along the sideline a trace the outline of it. Lets begin