If you teach elementary math, then you have probably heard plenty about the concrete, representational, abstract sequence of instruction. It's usually shortened to CRA. The idea is that concrete and representational (pictorial) experiences are required to make sense of abstract concepts. But I have found that CRA is not always well understood and is sometimes
Understanding CRA - Math Coach's Corner
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How to Teach Math Effectively Using the Concrete Representational Abstract Model - Shelley Gray
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How to Teach Math Effectively Using the Concrete Representational Abstract Model - Shelley Gray
Division Meets Problem Solving and CRA - Math Coach's Corner