十七八岁的中学生正处于思维最活跃的时期,他们喜欢思考,但由于知识底蕴不够丰厚,却不善于思维。如何开发中学生的智力,提高他们的思维水平,以培养21世纪国家建设需要的一代新人,无疑已成为一项具有重要意义的任务,且责无旁贷地落在教育工作者的肩上。恩格斯说:“一个民族想要 Seventeen-year-old middle school students are in the most active period of thinking. They like to think, but because the knowledge is not rich enough, they are not good at thinking. How to develop the intelligence of middle school students and improve their thinking level so as to cultivate a new generation of people needed for the construction of the country in the 21st century will undoubtedly become an important task, and they must shoulder the responsibility of educators. Engels said: "A nation wants