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本单元的教学是在10以内加减法计算的基础上进行的。20以内进位加法和退位减法,是四则计算的基础。因此,要使学生切实学好。教学中要力求体现教学目的整体性及教法的启发性。要重视学生主动获取知识的思维过程,力求把操作、语言和思维结合起来,使学生在获取知识的同时,促进思维能力的发展。问:教学中怎样体现教材的纵横联系? 答:纵的联系,要抓住如何把20以内进位加、退位减转化为10以内加减法,及沟通9加几与8加几方法上的联系。横的联系,要抓住20以内数的认识与进位加的联系。如,让学生把散开的13根小棒
The unit's teaching is based on the addition and subtraction within 10 calculations based on. Carry-in addition and subtraction within 20 subtraction, is the basis of the four calculations. Therefore, to make students learn effectively. Teaching should strive to reflect the integrity of teaching objectives and teaching inspiring. Students should take the initiative to acquire knowledge of the thinking process, and strive to combine the operation, language and thinking, so that students gain knowledge, while promoting the development of thinking ability. Q: How to embody the vertical and horizontal links of teaching materials in teaching? A: The vertical linkages, we must grasp how to carry within 20 plus, abatement reduced to less than 10 addition and subtraction, . Horizontal contact, we must seize the number of 20 within the understanding and carry plus contact. For example, let the students to spread the 13 sticks