一年级数学上册第3单元1_5的认识和加减法《比大小》课件新人教版.pptx

上传人:Iclinic170 文档编号:940571 上传时间:2019-03-05 格式:PPTX 页数:12 大小:1.76MB
下载 相关 举报
一年级数学上册第3单元1_5的认识和加减法《比大小》课件新人教版.pptx_第1页
第1页 / 共12页
一年级数学上册第3单元1_5的认识和加减法《比大小》课件新人教版.pptx_第2页
第2页 / 共12页
一年级数学上册第3单元1_5的认识和加减法《比大小》课件新人教版.pptx_第3页
第3页 / 共12页
一年级数学上册第3单元1_5的认识和加减法《比大小》课件新人教版.pptx_第4页
第4页 / 共12页
一年级数学上册第3单元1_5的认识和加减法《比大小》课件新人教版.pptx_第5页
第5页 / 共12页
点击查看更多>>
资源描述

比大小,(一)数一数,写一写。,(二)比一比,谁写得最好。,问题:每只小猴子吃1个梨、 1个桃、 1根香蕉,这些水果够分吗?,图中有什么?每种物体的数量分别是多少?,操作:摆一摆,把想法表示出来。,反馈:(出示学生摆的)谁明白这位同学的意思?,等号,读作:3等于3,指导:有1只小猴,就有1个桃,有3只小猴也有3个桃,小猴和桃的数量同样多,我们就说3等于3 ,这个符号叫等号。,3,3,读作:3大于2,指导:有1只小猴,就有1根香蕉,第3只小猴没有香蕉,3只小猴,2根香蕉,小猴的数量比香蕉的数量多,我们就说3大于2,这个符号叫大于号。,3,2,大于号,指导:有1只小猴,就有1个梨,小猴没有了,还多1个梨,3只小猴,4个梨,小猴的数量比梨的数量少。我们就说3小于4,这个符号叫小于号。,读作:3小于4,3,小于号,4,指导“”“”和“”书写,指导“”“”和“”书写,指导“”“”和“”书写,2,1,2,5,数一数,比一比。,动脑筋,问题:1. 看图,你知道了什么?,2. 小猴说得一定对吗?,不一定对,

展开阅读全文
相关资源
猜你喜欢
  • ASTM D7211-2006 Standard Specification for Parts Machined from Polychlorotrifluoroethylene (PCTFE) and Intended for General Use《聚氯三氟乙烯(PCTFE)加工制零件和通用零件的标准规范》.pdf ASTM D7211-2006 Standard Specification for Parts Machined from Polychlorotrifluoroethylene (PCTFE) and Intended for General Use《聚氯三氟乙烯(PCTFE)加工制零件和通用零件的标准规范》.pdf
  • ASTM D7211-2013 0625 Standard Specification for Parts Machined from Polychlorotrifluoroethylene (PCTFE) and Intended for General Use《聚氯三氟乙烯 (PCTFE) 加工制零件和通用零件的标准规范》.pdf ASTM D7211-2013 0625 Standard Specification for Parts Machined from Polychlorotrifluoroethylene (PCTFE) and Intended for General Use《聚氯三氟乙烯 (PCTFE) 加工制零件和通用零件的标准规范》.pdf
  • ASTM D7212-2007 Standard Test Method for Low Sulfur in Automotive Fuels by Energy-Dispersive X-ray Fluorescence Spectrometry Using a Low-Background Proportional Counter《用低背景比例计数器的能.pdf ASTM D7212-2007 Standard Test Method for Low Sulfur in Automotive Fuels by Energy-Dispersive X-ray Fluorescence Spectrometry Using a Low-Background Proportional Counter《用低背景比例计数器的能.pdf
  • ASTM D7212-2013 red 8125 Standard Test Method for Low Sulfur in Automotive Fuels by Energy-Dispersive X-ray Fluorescence Spectrometry Using a Low-Background Proportional Counter《采用.pdf ASTM D7212-2013 red 8125 Standard Test Method for Low Sulfur in Automotive Fuels by Energy-Dispersive X-ray Fluorescence Spectrometry Using a Low-Background Proportional Counter《采用.pdf
  • ASTM D7212-2013(2018) 1875 Standard Test Method for Low Sulfur in Automotive Fuels by Energy-Dispersive X-ray Fluorescence Spectrometry Using a Low-Background Proportional Counter.pdf ASTM D7212-2013(2018) 1875 Standard Test Method for Low Sulfur in Automotive Fuels by Energy-Dispersive X-ray Fluorescence Spectrometry Using a Low-Background Proportional Counter.pdf
  • ASTM D7213-2005 Standard Test Method for Boiling Range Distribution of Petroleum Distillates in the Boiling Range from 100 to 615&176 C by Gas Chromatography《气体色谱法确定沸程在100至615℃的石油馏.pdf ASTM D7213-2005 Standard Test Method for Boiling Range Distribution of Petroleum Distillates in the Boiling Range from 100 to 615&176 C by Gas Chromatography《气体色谱法确定沸程在100至615℃的石油馏.pdf
  • ASTM D7213-2005e1 431 Standard Test Method for Boiling Range Distribution of Petroleum Distillates in the Boiling Range from 100 to 615&176 C by Gas Chromatography《气体色谱法确定沸程在100至61.pdf ASTM D7213-2005e1 431 Standard Test Method for Boiling Range Distribution of Petroleum Distillates in the Boiling Range from 100 to 615&176 C by Gas Chromatography《气体色谱法确定沸程在100至61.pdf
  • ASTM D7213-2011 9375 Standard Test Method for Boiling Range Distribution of Petroleum Distillates in the Boiling Range from 100 to 615&176 C by Gas Chromatography《用气相色谱测量沸腾分布范围在100.pdf ASTM D7213-2011 9375 Standard Test Method for Boiling Range Distribution of Petroleum Distillates in the Boiling Range from 100 to 615&176 C by Gas Chromatography《用气相色谱测量沸腾分布范围在100.pdf
  • ASTM D7213-2012 0053 Standard Test Method for Boiling Range Distribution of Petroleum Distillates in the Boiling Range from 100 to 615° C by Gas Chromatography《用气体色谱法确定沸程在100至61.pdf ASTM D7213-2012 0053 Standard Test Method for Boiling Range Distribution of Petroleum Distillates in the Boiling Range from 100 to 615° C by Gas Chromatography《用气体色谱法确定沸程在100至61.pdf
  • 相关搜索

    当前位置:首页 > 考试资料 > 中学考试

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1