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【教学内容】苏教版五年级下册。【教学过程】一、揭示课题,初探学情师:同学们,今天我们一起来研究《和与积的奇偶性》。看到这个课题,你有什么想法?或者有什么疑问?生:什么叫奇偶性?师:有没有同学能回答?(学生沉思中,无人举手)师:这个问题看来有点难,我们今天这节课得重点解决它。二、复习旧知,铺垫新知师:快速判断下列数哪些是奇数,哪些是偶数。准备好了吗?依次出示99、70学生均能正确判断。继续出示778,306,
Teaching content】 【Soviet version of the fifth grade under the book. [Teaching process] First, to reveal the subject, the first exploration Lover: Students, today we work together to study the “parity of product and plot.” What do you think? Or have any questions? Health: What is the parity? Teacher: Is there any classmates can answer? (Student meditation, no one raised his hand) Teacher: This problem seems a bit difficult, we Today’s lesson focuses on solving it. Second, the review of the old knowledge, bedding new teacher: Quickly determine which of the following is an odd number, which is even. Are you ready? 99,70 students will be able to judge correctly. Continue to produce 778,306,