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科学涉及数学、物理、化学、生物、地理等学科知识,内容广阔,要求教师知识面宽。若是兼职的科学教师,几乎都是边学边教。由于知识局限,我们有时候不太理解教材上所提问题的答案和实验结论,就不免要翻阅教学用书;但往往教学用书上也没有明确答案,所以很多时候都是通过上网查询答案,比较吃力。如三年级上册第二单元《动物》中,在教学蜗牛的食物、休眠、排泄及繁殖时,学生举起自己饲养的蜗牛说:“老师,我看到我的蜗牛生了一只小蜗
Science involves mathematics, physics, chemistry, biology, geography and other disciplines, broad content, requiring a wide range of knowledge of teachers. If part-time science teachers, almost all learn while teaching. Due to limited knowledge, sometimes we do not quite understand the answers to the questions raised in the textbooks and the experimental conclusions, we can not help but read the teaching books. However, there is often no clear answer to the teaching books. Therefore, we often find it hard to find answers through the Internet. . As the third unit of the third grade ”Animal“, in teaching snail food, sleep, excretion and reproduction, the students raised their own snails said: ”Teacher, I saw my snail gave birth to a small snail