小学常识(一、二年级)录像教材是根据《常识》一至四册文字教材中的部分课的内容设计编制的。它利用电视录像真实、形象、直观的特点,为师生创设一些课堂上难以表现、观察和比较的自然现象,帮助学生理解教学内 Primary knowledge (first and second grade) Video materials are based on “common sense” one to four textbooks part of the contents of the design and preparation. It uses the real, visual and visual features of video recording to create some natural phenomena that teachers and students find it hard to express, observe and compare in class, and help students to understand teaching