美国心理学家布鲁纳认为:“学习的最好刺激乃是对所学材料的兴趣”。我们可以利用数学知识本身具有的吸引力,激发学生的学习兴趣和欲望,调动他们的学习积极性。要引导学生经历学习过程,让他们在掌握知识的过程中有所发现和创造,在学习探索中,亲身感受到成功的喜悦。我在教“分数化成有限小数”时,先让学生用分子除以分母的方法把分数化成小数,然后引导学生 Bruna, an American psychologist, said: “The best stimulus for learning is the interest in the material.” We can use the attractiveness of mathematical knowledge itself, to stimulate students interest and desire to learn, to mobilize their enthusiasm for learning. To guide students through the learning process, so that they have knowledge of the process of discovery and creation, learning and exploration, personally feel the joy of success. When I teach “fractionalized into finite decimals,” I first ask students to divide fractions into decimals by dividing the numerator by the denominator, and then guide the students