人教版高中生物教材关于“细胞大小与物质运输效率的关系”实验虽然能得出相应的实验结论,但是因为需要大量的数据处理和理论分析,所以让学生难以理解和应用。对此,可结合多年的教学经验及学生反映的情况,对是否切割琼脂块提出两种改进方案,从而更有利于学生掌握该实验。 People’s Education Edition of high school biology textbook on “cell size and material transport efficiency ” Although the experiment can draw the corresponding experimental conclusions, but because of the need for a large number of data processing and theoretical analysis, it is difficult for students to understand and apply. In this regard, combined with many years of teaching experience and students reflect the situation, whether to cut the agar block proposed two improved programs, which is more conducive to students master the experiment.