凤凰国际英语福综合写作主题训练education.ppt

Cast Doubt 4;Procedure ;Reading ; These days, many schools and research institutions find themselves relying more and more upon educational videos and DVDs. While some purists, preferring to use books, are vehemently against this trend, the reliance upon visual materials is actually a positive thing. First of all, educational materials are useless if the audience does not pay attention to them. The twenty-first century is a visual age. Students are much more used to watching videos and DVDs than to reading books. By relying upon visual aids, educators are more likely to capture the attention of students. Also, videos and DVDs are more easily able to explain difficult processes or ideas through the use of graphics or computer animation. This quality makes difficult topics much easier to understand, a definite merit that will help students further their education. Also, videos and DVDs are much cheaper than books. Many visual aids sell for less than ten dollars while books may cost two or three times that amount. Since many students are on tight budgets, this economic benefit will help them considerably. Additionally, many schools only have to purchase one video or DVD as opposed to buying thirty or forty or more copies of the same book. By purchasing visual materials, schools can save considerable amounts of money, which they can use to buy other important materials. ;Notes for reading ; I know many of you prefer watching educational DVDs to reading books. However, I must inform you that books are still much better than watching visual aids. Allow me to educate you as to why. First, videos are limited by time. You can only impart so much information in a one- or two-hour video. Therefore, much information is likely to be incomplete and not contain all the necessary information. You don’t have this issue with books. A 500book is filled with much more information than a two-hour DVD. In addition, visual materials are often des