It is to carry out multi-media teaching activities by illustrating the “Solution Osmotic Pressure” Teaching case, with making a comparison of modem technology teaching and traditional style. The result demonstrated that the modem multi-media based teaching activities can help to improve students ' achievements of all kinds, and remarkably assist them in carrying through their plans to their study targets of “comprehension”, “cognition” and “memorization”; on the contrary, excessive communication based on the multi-media platform may adverse final achievements. It suggested that teachers should enhance the communication frequencies with in - class students in the multi-media teaching process.%以"溶液的渗透压"为例,开展多媒体教学,比较现代信息技术教学与传统教学的差异性.结果表明:以多媒体技术开展教学,能有效提高学生的总学习成绩,并显著提高学生达到"理解""认识"和"识记"知识的学习目标;但过度地"人-机交流"反而使教学效果劣于传统教学.因此,建议教师使用多媒体技术开展教学,同时应加强与学生的课堂交流.
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