例题是教材的核心部分，是编者反复筛选、精心编拟而成的，蕴含着巨大的思维训练价值。“教材无非是个例子”。教师要站在“以人为本，促进人的发展”的高度，善于将教材中静态、单一的封闭性例题加工成动态、丰富的开放性教育资源，开发探索空间，教活例题，以“一”训“几” Example is the core part of the textbook, edited by the editor repeatedly, carefully compiled from, contains a huge value of thinking training. “Teaching material is nothing more than an example.” Teachers should stand at the height of “people-oriented, promote human development”, be good at processing static and single closed-case examples in teaching materials into dynamic and abundant open-ended educational resources, and explore examples of exploration space and teaching practice. “a few”