iRubric: Comparing Cell Phone Plans rubric

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Comparing Cell Phone Plans Comparing Cell Phone Plans Open ended assessment to gauge student's understanding of direct variation, linear equations and the use of graphs and equations to solve a real world problem Rubric Code: V84855 By audreynewman Ready to use Public Rubric Subject: Math Type: Assignment Grade Levels: 9-12

Comparing Cell Phone Plans
	Poor 0 pts	Fair 1 pts	Good 2 pts	Excellent 3 pts
Calculation of minutes used/month	Poor Number of minutes and explanation are not stated	Fair Number of minutes is stated but there is no clear explanation for arriving at this value	Good Number of minutes is stated but explanation is unclear	Excellent Number of minutes is stated with clear explanation for how this value was determined
Graph for each cell phone plan	Poor No graphs	Fair Graphs exists for each plan but is not clear/Graphs are partially completed	Good Graph exists for each plan but is some labels are missing	Excellent Graph exists for each plan with all labels
Equation for each cell phone plan	Poor No equations	Fair Partial completion of equations	Good Equations are stated but some are incorrect/Effort is apparent	Excellent All equations are completed and correct
Show which plan is the best for you	Poor No answer is given	Fair Plan and number of minutes are stated but explanation is unclear or nonexistent	Good Plan and number of minutes are stated/Explanation did not use both graph and equations	Excellent Plan and number of minutes are stated/Explanation is well stated using both graphs and equations
Show how much paid per month	Poor No answer is given	Fair Answer is incorrect but effort is apparent	Good Answer is correct/Explanation is unclear but effort is apparent	Excellent Answer is correct/Explanation is clearly written using graphs and/or equations to compute
Paragraph	Poor No paragraph	Fair Incomplete thoughts/sentences. Not much effort is evident.	Good Thoughts are slightly unclear/Supporting evidence is not stated	Excellent Thoughts are communicated clearly/Supporting facts are evident