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1 电视教材是教学发展的必然产物 教学活动由教师、学生和教材三元素组成,其中教材的质量直接影响着教学的效果。教材的优劣受到两个因素的制约,一是教材本身所含的内容;二是教材呈现的手段。纵观教材的进化轨迹,我们不难发现,教材的内容呈现手段与科学技术的发展密切相关。科学的发展不但使得教材的内容逐渐扩大和深化,而且使教材的呈现手段也在向有利于教与学的方向发展。
1 TV teaching materials are the inevitable result of teaching development. Teaching activities consist of three elements: teachers, students, and teaching materials. The quality of textbooks directly affects the effectiveness of teaching. The pros and cons of the textbook are constrained by two factors: one is the content of the textbook itself; the other is the means of presentation of the textbook. Looking at the evolutionary trajectory of textbooks, it is not difficult to find that the content presentation means of textbooks is closely related to the development of science and technology. The development of science not only makes the content of teaching materials gradually expand and deepen, but also makes the presentation methods of teaching materials develop in the direction conducive to teaching and learning.