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生物学是一门以实验为基础的科学,有关生物学的重大科学发现也都是经过大量的探究实验而获得的。新课程教学中更注重探究、操作及自我发展等实践能力的培养,倡导探究性学习。生物教材中提到生物实验设计的基本原则,它包括科学性原则、单因子变量原则、等量原则、对照性原则。在整个实验设计的过程中最难把握的就是“对照性原则”。具体到分析实验时,则变为对实验组与对照组判定的困难。如何辨别实验组与对照组呢?我们首先要从实验组与对
Biology is an experiment-based science, and major scientific discoveries about biology are obtained through a great deal of exploration experiments. New curriculum teaching more focus on exploration, operation and self-development and other practical ability training, advocating inquiry learning. Bio-textbooks refer to the basic principles of biological experimental design, which includes the scientific principle, the principle of single-factor variable, the principle of equivalence, the principle of control. The hardest part of the whole process of experimental design is the “principle of contrast”. Specific analysis of the experiment, then become the experimental group and control group to determine the difficulties. How to distinguish between the experimental group and the control group? We must first from the experimental group and right