高效生物课堂教学的关键在于,一是为学生构建一条逻辑严密、思路清晰的“知识链条”;二是为学生设计环环相扣、精练有序的“教学链条”。前者是对所教知识的浓缩与提炼,后者是帮助学生构建完整知识体系的“捷径”。对生物教学中两条“链条”的建构与设计进行了全面探析。 The key to efficient biological classroom teaching lies in that one is to construct a “knowledge chain” with strict logic and clear thinking for students; the other is to design a “chain of teaching” that is closely linked and concise to students. The former is the enrichment and refinement of teaching knowledge, the latter is to help students build a complete knowledge system “shortcut.” A comprehensive analysis of the construction and design of two “chains” in biology teaching has been carried out.