Question
Mikayla and Jesse both solved the equation x−15=12−8, using substitution. Mikayla says the answer is x=19, and Jesse says the answer is x=27. Which student is correct, and how do you know? Show your work and explain your thinking. (2 points)
Math Short Answer Rubric (2 points)
Points Awarded Criteria
2
The answer is correct. The student made no errors while solving.
The answer shows that the student used problem-solving skills and reasoning.
All work is shown or explained.
1
The answer is partially correct. The student mad
e some errors while solving.
Some problem-solving skills and reasoning were demonstrated.
Some work may be missing or not fully explained.
0
The answer is incorrect. The student made significant errors while solving.
Minimal problem-solving skills and reasoning were demonstrated.
Work is missing or not explained.