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一、复习准备,奠牢根基,让学生能学。数学科的特点之一是系统性强,后面的知识是前面知识的延伸和发展,而前面的知识是后面知识的基础,要学习新知识,必须对前面的知识理解深透。复习准备这个环节的目的是“奠基”。比如,要让学生能用“凑十法”计算9加几,就要使学生明确为什么要先“凑十”。教学中我除了复习有关知识外,我还增加了一项内容,用投影仪演示,左边摆6根小棒,右边摆7根小棒,问:你能马上说出一共有几根小棒吗?(当然不能)然后把小棒收起来重新摆,左边
First, prepare for review, lay a solid foundation for students to learn. Mathematics is one of the characteristics of the system is strong, the latter knowledge is the extension and development of the previous knowledge, and the previous knowledge is the basis for the latter knowledge, to learn new knowledge, we must understand the previous knowledge thoroughly. The purpose of review preparation for this session is “foundation ”. For example, to enable students to use “Minato ten ” Calculate 9 plus a few, we must make students clear why the first “Minato ”. In addition to reviewing my teaching, I also added an item, which is demonstrated by a projector. There are 6 small sticks on the left and 7 small sticks on the right. Q. Can you immediately say a few small sticks? (Of course not) and then put the small rod back to the pendulum, on the left