iRubric: Scale Factors, Length Ratios, and Area Ratios rubric

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Scale Factors, Length Ratios, and Area Ratios

Demonstrate understanding of dilations. Demonstrate understanding of the relationships among scale factors, length ratios, and area ratios between similar figures.

Rubric Code: T2AW44

By msorrells

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Public Rubric

Subject: Math

Type: Project

Grade Levels: 6-8

GPS Standards to be assessed: M7G2. Students will demonstrate understanding of transformations. M7G3. Students will use the properties of similarity and apply these concepts to geometric figures.
	Excellent Student demonstrates above average level of proficiency by meeting all criteria outlined below. 5 pts	Good Student demonstrates average level of proficiency by meeting most of the criteria outlined below. 4 pts	Fair Student demonstrates below average level of proficiency by meeting a few of the criteria outlined below. 3 pts	Poor Student demonstrates little or no level of proficiency by meeting none of the criteria outlined below. 2 pts
M7G2a Demonstrate understanding of translations, dilations, rotations, reflections, and relate symmetry to appropriate transformations.	Excellent Student has correctly demonstrated understanding of the four dilations.	Good Student has correctly demonstrated understanding of three of the four dilations.	Fair Student has correctly demonstrated understanding of two of the four dilations.	Poor Student has correctly demonstrated understanding of one of the four dilations.
M7G3c Understand the relationships among scale factors, length ratios, and area ratios to determine side lengths and areas of similar geometric figures.	Excellent Student has correctly demonstrated understanding of the relationship between scale factor and perimeter of the four dilations.	Good Student has correctly demonstrated understanding of the relationship between scale factor and perimeter of three of the four dilations.	Fair Student has correctly demonstrated understanding of the relationship between scale factor and perimeter of two of the four dilations.	Poor Student has correctly demonstrated understanding of the relationship between scale factor and perimeter of one of the four dilations.
M7G3c Understand the relationships among scale factors, length ratios, and area ratios to determine side lengths and areas of similar geometric figures.	Excellent Student has correctly demonstrated understanding of the relationship between scale factor and area of the four dilations.	Good Student has correctly demonstrated understanding of the relationship between scale factor and area of three of the four dilations.	Fair Student has correctly demonstrated understanding of the relationship between scale factor and area of two of the four dilations.	Poor Student has correctly demonstrated understanding of the relationship between scale factor and area of one of the four dilations.

Keywords:

GPS: M7G3b

Subjects:

Math

Types:

Project

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