物理与化学实验教学思维创新-畅读网

　　　　

物理与化学实验教学思维创新

作者：卢宏

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内容简介:

物理与化学实验是学校教学的重要组成部分。它对学生的化学知识、技能的掌握、能力的增强、科学态度、道德修养乃至其他非智力心理品质的提高，都起到至关重要的作用。新中国成立以来，全国各级教育管理部门、教育研究部门和工作在教学**线的广大教师，都在孜孜不倦地钻研、探讨教育的发展。但就目前的情况看，教育的发展并不平衡。两年多以前我们曾在几个不同地区的县乡城镇学校做过一些调查，在化学教学中能很大程度地做出全部演示实验的学校只占10%，能全部完成课本中规定学生实验的学校只占18%，其中有77%的教师认为他们学校的实验设备短缺、管理水平低下，以致严重或极严重地影响了教学效果。

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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 48 LIMIT 1 [ RunTime:0.000925s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 11 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.001863s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 14 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.001963s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1750449841 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:0.589293s ]

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