首先，教学支架通常是示范。
The first step in instructional scaffolding is usually modeling.
一种白板支架涉及一种物理学教学用具，具体为一种白板支架。
The invention relates to a white board bracket, which belongs a physics teaching tool.
一种白板支架涉及一种物理学教学用具，具体为一种白板支架。
The invention relates to a white board bracket, which belongs a physics teaching tool.
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