苏教版一年级下册数的顺序及大小比较市名师优质课比赛一等奖市公开课获奖课件.pptx

,课件,PPT,*,*,课件,PPT,第,3,单元 认识,100,以内数,3.4,数次序及大小比较,第1页,课件,PPT,2,、让学生经历比较,100,以内数大小过程，掌握比较,100,以内数大小方法。,1,使学生经过自主探索、合作交流，完成对百数表整理，深入了解,100,以内数次序和含义，从不一样角度丰富对,100,以内数特点认识。,3,、让学生深入体验数学与日常生活亲密联,系，培养知识迁移和抽象概括能力。,学习目标,第2页,1,10,12,19,23,25,26,28,34,37,43,48,53,58,64,67,73,75,76,78,82,89,91,100,你能按次序填数吗,?,第3页,1,10,12,19,23,25,26,28,34,37,43,48,53,58,64,67,73,75,76,78,82,89,91,100,2,3,4,5,6,7,8,9,11,13,14,15,16,17,18,20,21,22,24,27,29,30,31,32,33,35,36,38,39,40,41,42,44,45,46,47,49,50,51,52,54,55,56,57,59,60,61,62,63,65,66,68,69,70,71,72,74,77,79,80,81,83,84,85,86,87,88,90,92,93,94,95,96,97,98,99,第4页,先横着选几行数,读一读,你发觉哪些有趣现象,?,再竖着选取几列数,读一读,你发觉哪些有趣现象,?,你们还发觉了什么规律？,第5页,依据右表，把下,图中缺数填上。,15,16,25,26,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,第6页,依据右表，把下,图中缺数填上。,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,23,13,33,22,24,第7页,小松鼠和小兔比谁拾得多？,46,38,第8页,百位 十位 个位,6,4,百位 十位 个位,8,3,46,38,第9页,46,38,1,、用数组成比较；,2,、利用百数表比较；,3,、四十几比三十几多。,第10页,你会比较这些数大小吗？,32,38 67,60,小结：,比较两个两位数大小，能够先看十位上数，十位上比较大那个数就大。,第11页,智慧城堡,加油啊！,第12页,98,97,93,28,29,33,40,31,30,32,36,35,100,34,99,96,94,95,39,38,37,88,92,89,90,91,第13页,1.,比,69,大,1,(),。,2.,比,100,小,1,数是,(),。,3.,40,比,(),大,1,比,(),小,1,。,填空,70,99,39,41,第14页,王医生从,1,号病人看起，现在要看第,35,号病人。已经看了多少病人？,已经看了,34,个病人。,第15页,27,25,填一填,28,37,38,24,26,15,35,第16页,第17页,57,63,75,73,50,40,100,10,第18页,第19页,六十几比六十大，比七十小。,第20页,课堂小结,经过这节课学习你学到了什么？,第21页,课件,PPT,谢谢,第22页,