评价量规：
(1)教学中如何使用该评价量规（说出两种方案）
(2)与传统的纸笔测验相比较，运用案例中的评价量规对学生进行评价有何优点?
(3)指出案例中量规不够完善的地方。
正确答案及解析
正确答案
解析
(1)一种方案是根据总分来评判实验者实验过程的正确与否；另一种方案是分别根据取镜、安放、对光和观察这四部分的分数来评判实验者在每个部分的实验准确度，从而教师可以按板块来指导学生实验。
(2)学生的学习成就是多领域多方面的，有许多学习成就是无法用传统的纸笔测验来正确评价的。例如：表达交流技能、心因动作技能、运动技能、概念应用和情感态度特质等。这些成就都是强调实际的表现行为，都需要教师根据学生的表现过程的有效性或最后完成作品的成果品质。分别或合并地进行判断或评分，才能决定学生在这方面学习的成就高低。采用案例中的评价量规可以使教师针对学生的具体操作做出评价．而不是只注重实验结果或者理论知识。
(3)权重分值设定不合理，有的步骤较简单或者不是重点要求步骤，但是分值很高；有的步骤很重要，分值却比较低。
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