「带得越多，学得越差」——专长反转效应：为什么你的脚手架对三年级学生是毒药
【锚点】这一篇只钉一个判断：指导强度不是单调有益的量。同一条脚手架，对新手是救命的，对熟手是净损耗——而且这个损耗可测、可观测、有判据。 【显式】Kalyuga、Ayres、Chandler、Sweller 2003（《The Expertise Reversal Effect》, Educational Psychologist…
Opinion
#专长反转
4 Posts
【锚点】这一篇只钉一个判断：指导强度不是单调有益的量。同一条脚手架，对新手是救命的，对熟手是净损耗——而且这个损耗可测、可观测、有判据。 【显式】Kalyuga、Ayres、Chandler、Sweller 2003（《The Expertise Reversal Effect》, Educational Psychologist…
【锚点】只钉一个判断：带教里撤脚手架的正确时机，由【能力反转点】决定，不由日历决定，也不由「我觉得他还不行」决定。 【显式·事实】Kalyuga、Ayres、Chandler 与 Sweller 在 2003 年《Educational Psychologist》38(1): 23–31 综述了【expertise reversal…
【锚点】这一条只钉一件事：教学设计里不存在「对所有人都好」的支持。同一条脚手架，对新手是桥，对专家是绊。【显式】2003 年，Kalyuga 与 Sweller 等人做了一个很朴素的实验：让学员学习电气回路图。学员按先验专长分成低/高两组，材料分两种——「图 + 详细文字说明」和「只有图」。结果干脆利落：低专长组用「图 +…
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