ESHS MATHEMATICS DEPARTMENT

BENCHMARK ASSIGNMENT: Writing geometric proofs

ESSENTIAL CONTENT STANDARD: (Foundational results of plane geometry are embodied within this standard)

Geometry 2.0: Students write geometric proofs, including proofs by contradiction

RUBRIC: The following rubric will be used to assess all written geometric proofs, regardless of the context (homework, classwork, quiz, test, project, etc…).

Criteria	Elements for Meeting Criteria	A	B	C
Conceptual Understanding of Proof	o Possible solutions identified to reach conclusion	Must meet element	Must meet element	Must meet element
Givens	o Correctly used to mark diagrams o Correctly used to arrive at correct conclusion	Meets 1 out of 2 elements	Meets 1 out of 2 elements	Meets 1 out of 2 elements
Definitions, postulates, theorems	o Correctly used to support statement o Correctly supports conceptual understanding of proof	Must meet all elements	Meets 1 out of 2 elements	Meets 1 out of 2 elements
Logical Reasoning	o Each statements and reason follows a logical sequence to arrive at correct conclusion	Must meet element	Must meet element	Must meet element
Use of mathematical symbols	o Correctly used within the logical reasoning	Must meet element	Must meet element	Meets 0 out of 1 element
		6/7	5/6	4/6

Note: Any student scoring below 4 out of 6 does not pass

Within the Essential Content Standard and Assessment Rubric students meet the following Eagle Expectations:

• Think Critically: Students must identify and define the problem, explore options by analyzing and synthesizing information
• Communicate Effectively: Students must express ideas through written and numeric means
• Integrate Core Knowledge: Students demonstrate proficiency in academic content standards