3 points
The response shows complete understanding of the
problem's essential mathematical concepts by correctly
computing the perimeters and identifying that
rectangle D has the greatest area. The area can
be stated in terms of rectangle D having more
squares than rectangles A, B, or C. The response
does not have to state the area as 36 square units.
The response contains a clear, effective explanation
detailing how the problem was solved.
2 points
The response shows nearly complete understanding
of the problem's essential mathematical concepts.
The student will correctly compute the perimeter
and determine the area of a majority of the
rectangles shown. The response may contain minor
mathematical errors in computation, but will
demonstrate a clear understanding of the concepts
of perimeter and area. The explanation detailing
how the problem was solved may not be clear,
and may cause the reader to make inferences.
1 point
The response shows limited understanding of
the problem's essential mathematical concepts
by incorrectly computing the perimeter and area
of the majority of the rectangles shown. The
explanation may be missing or may clearly demonstrate
the student does not understand the concepts
of perimeter and area.
0 point
The response shows insufficient understanding
of the problem's essential mathematical concepts.
The procedures, if any, will contain major errors.
The explanation, if offered, will be unclear,
incorrect, or irrelevant. |
