这是一次课堂教学评优活动,教学内容是京版教材第8册第三单元的“植树问题”。为了上好这节课,我进行过多次试讲,经历了一次次磨课,一次次修改,让我感受颇多。根据以往的教学经验,四年级学生在一节课中学习植树问题的三种情况(两端都植树、两端都不植树、一端植树另一端不植树)势必会影响经历探究的过程。权衡之后,决定在这节课中只探究学习两端都种的植树情况。 This is a classroom teaching evaluation activities, teaching content is the eighth unit of the textbook in Beijing eighth unit “tree planting problem ”. In order to do a good job in this class, I have conducted many trial speeches, experienced a series of lessons, and again and again to make changes, which made me feel a lot. According to past teaching experience, the fourth grade students in a class to learn the three cases of planting trees (both ends of the tree, both ends of the tree is not planted at the other end of tree planting) is bound to affect the process of exploration. After weighed down, we decided to explore only the learning of tree planting at both ends in this lesson.