在当前“知识经济”时代 ,知识的更新、科技的发展日新月异 ,实施素质教育已成为人们的共识。改革传统的学科教学以期适应知识经济时代发展的要求 ,培养出具有较强的获取知识和处理知识的能力 ,具有丰富个性和开放头脑的人才 ,构建开放型的中师生物学教学模式已成为迫在眉睫的 In the current “knowledge economy” era, the renewal of knowledge and the development of science and technology are changing with each passing day, and the implementation of quality education has become the consensus of people. To reform the traditional subject teaching in order to meet the requirements of the era of knowledge-based economy development, to develop strong ability to acquire knowledge and process knowledge, with rich personality and open-minded people, and to build an open middle school biology teaching model has become imminent of