iRubric: Exploring using a negative scale factor on a coordinate plan rubric

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Exploring using a negative scale factor on a coordinate plan

Students were given a quadrilateral in Matrix notation, and asked to perform a dilation using a a negative scale factor. Students were then asked to make conclusions about the graphed preimage, and image, using specific geometric terminology

Rubric Code: T9WXW2

By memacri

Ready to use

Public Rubric

Subject: Math

Type: Assessment

Grade Levels: 9-12

Geometry Transformations
	Rarely Completes 1 pts	Sometimes Completes 2 pts	Often Completes 3 pts	Always Completes 4 pts
Graphing and labeling ofPreimage	Rarely Completes Student did not graph the preimage correctly.	Sometimes Completes Student did not graph the preimage correctly, but graphed a quadrilateral.	Often Completes Student graphed only the ordered pairs of preimage correctly	Always Completes Student graphed quadrilateral pre-image correctly.
Transformation Accuracy	Rarely Completes Student did not perform the transformation correctly and did not graph the image.	Sometimes Completes Student did not perform the transformation correctly, but graphed a quadrilateral.	Often Completes Student performed a transformation to the pre-image, only graphed the ordered pairs of the image correctly.	Always Completes Student performed the transfomation correctly to the preimage, and graphed graphed quadrilateral correctly
Conclusion	Rarely Completes Student did not make a conclusion about preimage and image.	Sometimes Completes Student made an incorrect conclusion but and did use specific geometric terminology.	Often Completes Student made a correct conclusion but did not use specific geometric terminology.	Always Completes Student made a correct conclusion and used specific geometric terminology.
Final product quality	Rarely Completes Final product is overall messy, and it is clear the student did not take care to turn in quality work. Student did not edit for errors.	Sometimes Completes Final product is messy in places, and the student took little care to turn in quality work. Student did not edit for errors.	Often Completes Final product is neat, and the student took care to turn in quality work. However, the student did not carefully edit for errors.	Always Completes Final product is neat, and it is clear that the student took great care to turn in quality work. Student edited carefully for errors.