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    October 22

    Volunteer回来

          今天晚上去Burlington一个小学志愿当了一会老师,第一次给小小孩子上了几堂短课。内容是教他们做一个简单的聚合物化学实验,做橡皮泥一样的玩具(正好是我的本行)。目的是通过展示一些趣味小实验,激发幼儿和小学生对科学的兴趣。
          因为有个比较熟的朋友在组织这一系列给当地小学普及科普知识的活动,工作量真是比较大,我想看人家也不容易,就去帮个忙吧。加拿大的品德教育确实做得到位,志愿者的经历每个人都有,即使有些人不那么热衷但是绝对不会表现的排斥。 虽然有些是为了满足学校的要求,有些是为了锻炼自己的能力,但是总有一些真的是出于热心,无私奉献精神真的是很让人敬佩。虽然我不是加拿大人,实在被她们感动,也做一点小贡献吧, 顺便自己也体验一下他们的小学教育环境。
     
         今天来的小孩年纪从3岁到6、7不等,越小越听话,所以教起来更容易一点了。不过因为太小,要解释概念还有为什么这样子还真是挺难的。幸亏都是家长带着一起参加,大人听得懂就算ok了。 从硼酸钠和胶水开始,两个按照一定比例放进一个袋子里混合,加一两滴食用色素,然后就封住袋子揉啊揉,几分钟之后液体就慢慢变稠变软,最后就凝聚成弹性的一团东西了,颜色也可以选择色素调节。产品可以随意扯很长,或者扭曲或者像鼻涕一样挂成一片,或者像球一样弹起来,我们叫它“silly putty”。其实这就是一个让胶水中的聚合物交联的实验,硼酸钠是交联剂。这也是我第一次做这个东西,确实是挺好玩的。 一个晚上一波接一波,连续上了4堂一摸一样的课,晚饭也没来得及吃的说。虽然有点小累,但是做了好事还是心情比较舒畅,^_^!
     
     
     

    Comments (4)

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    艳 张wrote:
    真好,我也想参加!
    Oct. 26
    lu wangwrote:
    呵呵 我以前也做过差不多的volunteer, 教小孩子做口红, 有的孩子做出来的颜色还挺好看的。确实是 很有意思的经历
    Oct. 22
    Anniewrote:
    不错不错,也想听听顾老师的课。
    Oct. 22
    yoyo 吴wrote:
    老师,我也要报名听课
    Oct. 22

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