I am getting ready to begin teaching a grade 3 geometry unit and all the materials I have found use the exclusive definition. The definition needs to be clarified since third grade has only two geometry standards and one is about 2-D attributes. The inclusive definition will totally change the image that our students now recognize as a trapezoid. It will include all squares, rectangles, parallelograms, and rhombi.
Is PARCC aware of the discrepancy in terms?