教学内容:九年义务教育六年制小学数学第十册“质数与合数”。教学目标:1.理解质数与合数的意义,知道它们之间的联系与区别。2.能根据它们的意义判断哪些是质数,哪些是合数。3.培养学生的观察能力、比较能力、分类能力和归纳概括能力。教学重难点:1.理解质数与合数的意义;2.质 Content: Nine Years of Compulsory Education Sixth Year Primary School Mathematics “Tertiary Mathematics and Algebra”. Teaching Objectives: 1. To understand the meaning of prime numbers and the composite number, to know the relationship between them and the difference. 2. According to their significance to determine what is the prime number, which is the composite number. 3. Cultivate students' abilities of observation, comparison, classification and generalization. Teaching difficult: 1. To understand the meaning of the prime number and the composite number;