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近几年来,我在自然教学中,根据电教和实验室装备条件,以及课文内容的设计需要,巧妙地进行媒体组合,取得了更好的教学效果。 1.利用投影,使抽象的实验具体化 小学自然课本安排的实验内容比较多,为使实验做得成功,我设计了投影与实验的组合方式教学。例如在演示音叉发声实验时,我敲响音叉,让学生用手轻轻触摸音叉(有麻手的感觉),然后把敲响的音叉迅速插入盛水的玻璃水槽中,并在投影仪上投影,水波的扩散清
In recent years, in the teaching of nature, based on the requirements of audio-visual and laboratory equipment, as well as the design of the content of the texts, I skillfully carried out the media combination and achieved better teaching results. 1. Use of Projection to Concretize Abstract Experiments There are quite a few experimental contents in the arrangement of natural textbooks in primary schools. To make the experiment successful, I designed a combination of projection and experiment teaching. For example, during a demonstration of the tuning fork sounding experiment, I struck the tuning fork and let the students touch the tuning fork (the feeling of hemp) with his hand. Then, the ringing fork was quickly inserted into the glass sink with water and projected on the projector. Water wave spread clear