iRubric: Unit Rate Product Comparison rubric

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Unit Rate Product Comparison

(1)Neatly cut out pictures of products from a grocery store circular. Calculate the unit rates of your products. (2)Compare two items of different sizes by calculating the unit rate. (3)Create your own problem using unit rate.

Rubric Code: ECXC4A

By tigerlily51480

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Public Rubric

Subject: Math

Type: Assignment

Grade Levels: 6-8

Cove
	Outstanding 4 pts	On Target 3 pts	Minimum Target 2 pts	Below Target 1 pts
Comparison of the Items chosen. 4 pts Compared the Tide $15.99/150fl.oz to Clorox 2 $9.99/66fl.oz.	Outstanding Clearly chose two items of different sizes and accurately compared them by their unit rate. Poster clearly communicates the unit rate for both items. The better buy is stated. No errors.	On Target The presentation indicates a comparison of two rates with decent accuracy. The better buy is stated. Minimal errors.	Minimum Target Comparisons are not completely clear and accurate. Some of the steps for comparing are left off. The better buy is not stated. Some errors.	Below Target Problem not finished or the proportions were not set up correctly to calculate the unit rate. The better buy is not stated. Many errors.
Presentation 4 pts Solutions and Illustrations	Outstanding Complete problem is illustrated, when applicable, and explained using math proportions and problem-solving. Solution(s) are clearly noted on the poster/paper.	On Target Complete problem is solved; Solution(s) are clearly noted on the poster/paper.	Minimum Target Most of the required solution(s) are completed. Explanations using proportions are limited or missing to prove solutions.	Below Target Problem and solutions are randomly given with little or no detail on how solutions were attained.
Clarity and Neatness 4 pts	Outstanding WOW! Poster is well-organized, neatly presented in a colorful and engaging manner. Viewer can easily follow the flow of information presented.	On Target Poster presents problem in a neat manner. All segments of the problem are visible, but lack organization for clarity.	Minimum Target Poster requires viewer to study presentation to find all the pieces of the task. Writing may not be readily legible or organized.	Below Target Problem segments arei haphazardly presented with no apparent organization; lacks necessary neatness needed to easily inform viewer.
Math Computation & Logic 4 pts Show all steps of your division to calculate the unit rate. Double check your answers with a calculator to make sure they are right.	Outstanding Math computations are complete and correct; logic used is mathematically sound; all steps to the solution are included.	On Target Math computations are complete and mostly correct; errors occur in computation; logic is mathematically sound; most steps are included.	Minimum Target Missing 1 segment of required solutions; Math computations are incomplete with errors; 1 error in logic occurs which invalidates a solution; some steps are omitted.	Below Target Segments of problem solutions are incomplete or missing; 2 or more logic errors occur which invalidate solutions; steps are omitted.

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Math

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