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高中生物第三章中《减数分裂与有性生殖细胞的成熟》一节,是教材的重点和难点,同时又是深刻理解并掌握遗传基本规律的基础。为此,我制作了“减数分裂活动演示器”(该作品获山东省小发明创造活动二等奖)用于教学,使染色体真的“活”起来了,它生动形象地反映了减数分裂过程中染色体的动态变化规律。三年的教学实践证明,它不但节省了教学时间,而且取得了极好的教学效果,深受学生欢迎。现简介如下:
The chapter “Maturation and Sexual Germ Cell Maturation” in the third chapter of high school biology is the key and difficult point of the teaching material, and at the same time, it is the basis for profound understanding and mastering the basic laws of genetics. For this purpose, I produced the “Manacle Separation Activity Demonstrator” (the work was awarded the second prize for the creation of Shandong Inventions) for teaching so that the chromosomes really “lived”. It vividly reflected the subtraction. Chromosomal dynamics during the process of division. Three years of teaching practice has proved that it not only saves teaching time, but also achieves excellent teaching results. It is welcomed by students. The brief introduction is as follows: