The research on a remote class method with an observation and an experiment by the telecommunication network

我们用小灵通组建了电信网络。在大阪府教育中心与合作研究小学之间，进行了1节物理区课、3节化学区遥课和2节生物区遥课。网络软件是微软公司的NetMeeting。图像由数码摄像机摄取到个人计算机(PC)中，声音和语音也通过麦克风摄取到PC中。这些图片和声音被提供给拥有小灵通的学校。因为电信的最高速率是KBS，所以画面只有一帧或两帧。即使电信条件好，快现象也不能表现出来。运动图片预先以文件的形式发送。他们的照片和文件被投影仪放大了，因为一个班的所有孩子都能看到。物理区域的课程内容是“电流的函数”。我们注意到了电流的发热。关于热和光的这一功能，我们做了一个电灯泡的实验。我们在液氮中对碳丝施加了电压。在这个实验中，我们解释了一种电灯泡。在化学领域，我们上了材料的溶液课程，特别是从溶液中生长大晶体。在生物领域，我们教孩子们蝴蝶从昆虫的卵子和身体成长的过程。孩子们耐心地学习食物和饮食方式。用扫描电子显微镜观察昆虫的嘴巴。问卷调查效果很好。希望参加远程课程的儿童比例为96.7%。儿童对远程教学内容的理解比例为81.5%。孩子们通过这些远程课程对科学感兴趣，尽管这些课程的内容很难。

We made the telecommunication network with PHS. Between Osaka Prefectural Education Center and elementary schools of research cooperators, a remote lesson of physical region, three remote lessons of chemical regions and two remote lessons of biological regions were done. Network softwear is NetMeeting of Microsoft company. Pictures were taken by digital video camera into personal computer(PC) and sounds and voices were also taken by microphone into PC. These pictures and sounds were provided to schools with PHS. Because the maximum speed of telecommunication is 64 kbs, frames of pictures are one or two. Even if the condition of telecommunication is good, fast phenomena cannnot be expressed. Moving pictures are sent as files beforehand. Their pictures and files were magnified by projector, for all children of a class could see them. The content of lesson in a physical region is "function of electric current". We paid attention to heat of electric current. About heat and light of this function, we did an experiment of electric bulb. We applied an electric voltage to carbon filament in liquid nitrogen. With this experiment, we explained an electric bulb. In chemical region, we did lessons of solution of materials, paticularly, large crystal growth from solution. In biological region, we taught children the process of which butterfly grows up from an egg and bodies of insects. Children learned foods, the way of eating, paticularly. Mouths of insects were observed with scanning electron microscope. Investigation of questionnaire was very good. The percent of which children hope to take these remote lessons is 96.7%. The percent of which children understood these contents of remote lessons is 81.5%. Children were interested in science by these remote lessons, in spite of difficult contents of these lessons.