海口市琼山第三小学一年级数学上册“线上课堂”解决问题

椰博小学

<p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">&nbsp; &nbsp; &nbsp;&nbsp;小学数学学习什么最难?如果你问孩子,孩子肯定异口同声地回答是解决问题,<span style="letter-spacing: 0.3px;">可是有家长问,我都不知道解决问题能力培养从何开始,如何培养?</span></h3> <h3><span style="color: rgb(25, 25, 25); font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; letter-spacing: 0.3px; text-align: justify; white-space: normal;">&nbsp; &nbsp; 以一年级第三单元加法的认识为例,下面是主题图:</span><br></h3> <p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">&nbsp; &nbsp; &nbsp;教师第一个问题会问,你看到什么?你是怎么知道的?<span style="letter-spacing: 0.3px;">&nbsp;</span><span style="letter-spacing: 0.3px;">通过提问,让孩子知道如何观察情境图,上面的方法就是从左往右看,讲的都是小丑自个发生的事。</span></h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><span style="letter-spacing: 0.3px;">&nbsp; &nbsp; &nbsp;其实这就是解决问题能力培养的第一步,学会观察情境图。</span></h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">&nbsp; &nbsp; 观察情境图,就相当作文的审题,如果直观的图,孩子都不能读懂,你还指望今后轻松拿下文字题吗?<span style="letter-spacing: 0.3px;">因此要教会孩子看图,教会孩子看图的方法有:</span></h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">&nbsp; 1.&nbsp;<span style="letter-spacing: 0.3px;">看</span><span style="letter-spacing: 0.3px;"></span><span style="letter-spacing: 0.3px;"></span><span style="letter-spacing: 0.3px;"></span><span style="letter-spacing: 0.3px;"></span><span style="letter-spacing: 0.3px;"></span><span style="letter-spacing: 0.3px;"></span><span style="letter-spacing: 0.3px;"></span><span style="letter-spacing: 0.3px;"></span><span style="letter-spacing: 0.3px;">图,</span><span style="letter-spacing: 0.3px;">有时图会是一个发展的情景,它会以1、2、3幅图告知</span><span style="letter-spacing: 0.3px;">或是用</span><span style="letter-spacing: 0.3px;">箭头</span><span style="letter-spacing: 0.3px;">表示它的发展过程。</span></h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">&nbsp; 2. 观察,要进行有序的观察,掌握观察的方法,如从左往右看,从上往下看等等。</h3> <h3><font color="#010101"><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">&nbsp;第二步,问题意识的培养</h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">&nbsp; &nbsp; &nbsp;&nbsp;如上图,孩子都能说出小丑左手和右手各拿几个气球,还能说出合起来一共4个,这个时候教师一般都会把结果问题化,也就是:小丑一共有几个气球?希望家长平时也这样做。</h3></font></h3> <h3><font color="#010101"><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">第三步,根据情境图列式</h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">&nbsp; &nbsp; &nbsp;&nbsp;这是最关键的一步,前面所有的铺垫就是实现这个结果。</h3></font></h3> <h3><font color="#010101"><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">第四步,检查</h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">&nbsp; &nbsp; &nbsp;就是以问促思,比如3+1=4,一定让孩子知道3表示什么?加1表示什么?等于4表示什么?整个算式又表示的是什么意思?还可以列别的算式吗?哪个更好?</h3></font></h3> <p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">&nbsp; &nbsp; &nbsp; 只有让孩子自己清楚算式所表示的意思,才有利于培养学生对于数量关系的理解和运用。<span style="letter-spacing: 0.3px;">如果孩子从一开始就能从直观的看图列式里弄清楚数量关系,到高年级的文字解决问题帮助将会很大,</span><span style="letter-spacing: 0.3px;">可别以为这是些小问题哦,很多数学知识都是环环相扣的,一个忽视都可能引起连锁反应。</span></h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><span style="letter-spacing: 0.3px;">&nbsp;</span></h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><b style="letter-spacing: 0.3px;">巩固练习:</b></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">1<span style="letter-spacing: 0.3px;">.小白兔有5个萝卜,小灰兔的萝卜和小白兔同样多,两只小兔一共有多少个萝卜?</span></h3><h1 style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"></h1><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br style="-webkit-tap-highlight-color: transparent;"></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">2.停车场有9辆车,开走了3辆,还剩下几辆?</h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br style="-webkit-tap-highlight-color: transparent;"></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">3.小胖家买了5只茄子,吃掉了5个,现在还剩下几个?</h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br style="-webkit-tap-highlight-color: transparent;"></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">4.小红做了3朵红花、6朵黄花,她一共做了几朵花?</h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br style="-webkit-tap-highlight-color: transparent;"></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">5.车上有10人,到站后下去了6人,又上来了5人,现在车上有几人?</h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br style="-webkit-tap-highlight-color: transparent;"></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">6.小明要做15朵小红花,已经做了5朵,还要做几朵?</h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br style="-webkit-tap-highlight-color: transparent;"></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">7.小明已经做了2道,一共要做13道题,还要做多少道题?</h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br style="-webkit-tap-highlight-color: transparent;"></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;">8.原来有7只猴子,又跑来了6只,现在有多少只?</h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br style="-webkit-tap-highlight-color: transparent;"></h3><p style="-webkit-tap-highlight-color: transparent; font-size: 18px; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"><br></h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; line-height: 1.6em !important;"> <span style="letter-spacing: 0.3px;">9.11</span><span style="letter-spacing: 0.3px;">路车到站后,上来了8人,现在车上有12个人,原来车上有几个人?</span>&nbsp; &nbsp;&nbsp;</h3>

孩子

解决问题

情境

一共

观察

算式

培养

小丑

车上

图列