教育技术50年.doc

教育技术50年
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. P-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
印发了《中国教育改革和发展纲要》，文件中明确提出：“积极发展广播电视教育和学校电化教学，推广运用现代化教学手段，要抓好教育卫星电视接收和播放网点的建设，到本世纪末，基本建成全国电教网络，覆盖大多数乡镇和边远地区。”
2．学校电化教育的发展
从1979年开始，教育部成立了电化教育局和中央电教馆，负责全国的电教管理工作和业务工作。到1985年底，全国已有2253个县（区）建立了电教机构，占全国区县的95%左右，全国800多所高等院校以及许多中小学都先后建立了电教中心与电教室。
3．远距离教育的发展
1978年，中国广播电视大学创办。到90年代初，已经成为世界上最大的远距离学校。
1986年，中国教育电视台（CETV）创建。截至1997年底，我国已经建立教育电视台、收转台940多座，卫星电视地面接收站1万多座，。
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