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在讲授高中《生物》第三章“减数分裂与生殖细胞的成熟”一节时,一般都是将课本第72页的“精子的形成过程图”放大复制成挂图进行教学。但因静止的图形很难反映这一变化多端的过程的全貌,致使学生对这段教学内容,历来感到难懂难记,为突破这个教学难点,我将“精子的形成过程”连续图改为“活动剪贴图”,即课前用硬纸片分别按课本上的图示,剪成各种细胞和其中染色体的示意图形(图一所示为其中的一部分)。
When teaching the “Maturation of Miosis and Germ Cells” chapter in High School “Biology”, Chapter 3, “Sperm Formation Process Map” on page 72 of the textbook is generally enlarged and copied into wall charts for teaching. However, it is difficult for the static graphics to reflect the entire process of this changing process. As a result, students have always been puzzled and hard to remember about this teaching content. To break through the teaching difficulties, I changed the continuous process of “sperm formation process” “Activity Clipping” means that each class of cells and their chromosomes are cut into schematic shapes (a portion of which is shown in Figure 1).