There is a need to find ways of productively engaging K‐12 students with engineering design. I investigate a new class of physical models, referred to as Improvable Models, as scaffolds for helping middle school students productively engage in engineering design practices.

中文翻译：

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可改进的模型，作为脚手架，用于促进生产性纪律参与工程设计活动

有必要找到使K-12学生进行工程设计的有效方法。我研究了一类称为“改进模型”的新型物理模型，该模型可帮助中学生有效地从事工程设计实践。