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在教学云、雾、雨、露、雪、霜这些自然现象时,对这些学生常见的简单的现象,需不需要问一问“它们”是什么?过去我在教学中,对这些问题都认真地给出了答案:云是悬浮在高空的,由水蒸气变成的许多极细小的小水点或小冰晶;雨是从高空云中降落下来的小水珠;露是附着在地表草叶等物上的,由水蒸气变成的小水珠,…… 对于这些简单现象,有没有必要去深究呢?我们先看看刘默耕老师关于自然教学的一段论述:所谓探索大自然的秘密无非是三个方面:一是大自然里有什
When teaching the natural phenomena of cloud, fog, rain, dew, snow and frost, we should not have to ask them the simple phenomenon common to these students. In the past, I was serious about these problems in teaching Gives the answer: the cloud is suspended in the air, from water vapor into many small tiny water droplets or ice crystals; rain is a drop of water droplets from the high clouds down; dew is attached to the surface of grass leaves For these simple phenomena, there is no need to go deep into it? Let us first take a look at Liu Mogeng teacher on natural teaching a period of discussion: the so-called exploration of nature's secret is nothing more than Three aspects: First, what's in nature