在现代教学论强调学生主体作用的今天，教师的主导作用仍不可少。笔者认为，生物教师的主导作用重在以下三个方面。一、引导作用引导即引路导向，或叫诱导。它是启发式教学中的经常运用的手段。“施教之功，贵在引导。”无论是新课的引入，还是新知识、新问题、新思路、新方法 In today’s modern teaching theory emphasizes the main role of students, the teacher’s leading role is still indispensable. The author believes that the leading role of biological teachers focuses on the following three aspects. First, the guiding role of guidance is the guidance of guidance, or called induction. It is a frequently used method in heuristic teaching. “Education is a guide, you are leading.” Whether it is the introduction of a new class or new knowledge, new problems, new ideas, new methods