小学自然课的知识面广,教学内容十分复杂,有许多问题在课堂教学中是无法解决的,还需要做大量的观察试验。在大量的观察试验中,学生不仅能验证在课本上学到的知识,养成良好的动脑、动手的习惯,还常常会得到一些意想不到的收获,掌握一些书本上没有的知识。 There is a wide range of knowledge in the nature class of primary school and the teaching content is very complicated. There are many problems that can not be solved in the classroom teaching and lots of observation and experimentation are needed. In a large number of observational experiments, students can not only verify the knowledge learned in the textbooks, develop good brains, hands-on habits, but also often get some unexpected gains, master some knowledge that is not in the books.