建构主义理论在当前的新课程改革中起着极其重要的作用,是我国新课程改革的两大理论支撑之一。本文以建构主义学习理论为指导,结合新课程生物的教学特点和中学生心理特点以及课堂教学模式的研究与尝试,以《食物的营养成分》一节为例,运用建构主力理论精心进行教学设计,发挥学生学习的自主性,提升课堂效益,使生物课堂对学生充满乐趣和诱惑。 Constructivism theory plays an extremely important role in the current reform of the new curriculum and is one of the two theoretical propositions of the new curriculum reform in our country. Based on the constructivist learning theory and combining with the teaching characteristics of the new curriculum biology and the psychological characteristics of middle school students as well as the research and try of the classroom teaching model, this article uses the section of “Nutritional Components of Food” as an example, elaborating the instructional design, Give full play to the autonomy of students in learning, enhance the efficiency of classrooms, and make the biology classroom full of fun and temptation to students.