Mathematical practice #6 states that we can attend to precision. Guided by this, we approached the counting of square units with care and purpose. We started by sharing our ideas about "area" and what we think it is. After determining that it meant a space or region of a 2D shape, we ventured to find out the area of a book using square units. Precision was seen through the way students communicated their methods and also in the way they counted the square units and ensured no overlaps and gaps.
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