iRubric: Rubric for Graphing System of Inequalities

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Rubric for Graphing System of Inequalities Rubric for Graphing System of Inequalities Students will be able to solve and graph a system of inequalities appropriately when presented problems in numeric form as well as applying concepts to solve word problems. Rubric Code: TXAWXB5 By Mrs_Skelton Ready to use Public Rubric Subject: Math Type: Assessment Grade Levels: 9-12

Numeric & Graphing
	Poor 0 pts	Fair 1 pts	Great 2 pts
Numeric Solving inequality or system of inequalities using algebraic methods	Poor Incorrect use of opposite operations to solve for variable. Incorrect application of integer rules. Replaced inequality sign with an equal sign.	Fair Minor mathematical errors (i.e. appropriate operation used but incorrect solution used such as 8x2=14) but overall procedural steps correct. Inequality sign flipped unnecessarily or was not flipped when needed	Great Inequality or system of inequalities solved correctly using correct procedural steps and arithmetic.
Graph Illustrating and/or solving inequality on number line, or system of inequalities on coordinate graph.	Poor Graph was not completed, or half completed (only one inequality shown). Graph incorrectly illustrates inequality, the slope of the line is incorrect.	Fair Graph correctly illustrates inequality (or system of inequalities) student solved. Graph correctly illustrated inequality (or system) with minor mistakes (shaded correctly but incorrect type of line).	Great Graph illustrates the correct inequality and/or system of inequalities. Correct type of line, slope, direction of shading, and shared region are shown.
Word Problems 2 unknown variables
	Poor 0 pts	Fair 2 pts	Great 4 pts
Word Problems Setting up and solving word problems using an inequality or system of inequalities.	Poor Not attempted or has one or more of the following: 1. equation does not illustrate word problem 2. is not completely solved 3. is solved using wrong procedural steps as well as arithmetic. Limited knowledge of key words in word problems to signify operations.	Fair Problem attempted but shows one or more of the following: 1. Problem is set up correctly using an inequality (values in right place, variable in right place, correct operations used), but may have used incorrect symbol. 2.Solved inequality using appropriate procedural steps and rules, but arithmetic may be incorrect.	Great Inequality correctly illustrates situation in word problem, utilizing grade level concepts. Inequality is solved accurately and utilizes correct procedural steps and rules.