view the Singapore model method - Home Page | TOC Theory of ...
view the Singapore model method - Home Page | TOC Theory of ...
view the Singapore model method - Home Page | TOC Theory of ...
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Comparison ModelAddition and Subtraction• The comparison <strong>model</strong> is a quantitative relationshipamong three quantities: larger quantity, smallerquantity and <strong>the</strong> difference. That is,• Larger quantity- smaller quantity = difference• Students can also find one quantity:• Smaller quantity + difference = larger quantity• Larger quantity – difference = smaller quantityLarger quantitySmaller quantitydifference11/19/2011