The emergence of augmented reality technology has injected new vitality into teaching, especially when the visualization and interactivity have increased students' interest in scientific inquiry. Although augmented reality technology has brought freshness to students, it is necessary to design suitable teaching support to promote student learning. Therefore, knowing how to design a teaching support system has become an important research problem. The researchers have designed open scaffolding and convergent scaffold based on augmented reality technology as a teaching support. Twenty-one elementary school students were randomly assigned to use either the convergent scaffolding or the open scaffolding for a learning task. Using a mixed research method, this study examined the effects of different scaffoldings on knowledge retention, knowledge transfer, learning satisfaction, and cognitive load. The results revealed that open scaffolding could improve students' knowledge retention, knowledge transfer, and reduce cognitive load. © 2019 IEEE.
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