１在生物实验教学中，遵循学生认知规律，探索创新，为发挥学生主体作用拓展开放性空间a．把有些演示实验如河蚌的演示实验改为学生分组实验，为学生创造动手、动脑的机会。b．改常规的演示实验如光合作用的实验、鲫鱼和家兔等解剖实验，为结合或辅以电教手段的实验。c．开展实 1 In biological experiment teaching, following the rules of students’ cognition, exploring and innovating, and opening up an open space for students to play their role a. Some demonstration experiments such as Hexu’s demonstration experiment were changed to student group experiments to create opportunities for students to use hands and brains. b. The conventional demonstration experiments such as photosynthetic experiments, carp and rabbit anatomy experiments were changed, and the experiment was combined or supplemented with audio-visual means. c. Carry out