Representations of Concepts

Representations of Concepts

Three ways to represent perimeter: I taught a lesson on perimeter to a 5th grade class. First I had them create a rectangular pen for their animals and they counted the number of fence pieces. Then we drew a rectangle to represent the pen. Finally we looked at the formula. This allows a deeper conceptual understanding of the concept. This is known as Concrete-Representation-Abstract – representing the concept at all three levels.

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4 thoughts on “Representations of Concepts

  1. […] photos below are used to introduce length and area as part of a CRA approach. First a student is asked to build a Lego garage. He first builds the bottom row of a wall […]

  2. […] the “mathy” way of talking about it. This follows the Concrete-Representation-Abstract (CRA) approach to presenting […]

  3. […] 2 sided tokens to support his work with integers (red for negative and yellow for positive) in a CRA approach. The color coding and tokens were like the swimmies in the photo above of the child in the […]

  4. […] Lego model is the concrete representation in CRA. In this lesson I subsequently had students use fractions trips (on a handout) and then number […]

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