MATH STUDENT RESPONSE SHEET

Name of Open Response: Sally’s Situation Student Name______

Type of Response: Algebraic Ideas

Sally had 4 problems on her homework. She had asked you to check her work.

a.  Work each problem before looking at Sally’s work. Show your work.

1. 5 + 7 – 2 × 3 2. 3(8 - 3) + 2(6 - 3)

3. 42 + 2 × 6 4. 4(18 – 6 + 3)

b.  This is Sally’s work. Which problems are correct?

1. 5 + 7 – 2 × 3 2. 3(8 - 3) + 2(6 - 3)

12 – 2 × 3 3(5) + 2(3)

10 × 3 15 + 6

30 21

3. 42 + 2 × 6 4. 4(18 – 6 + 3)

8 + 2 × 6 4(18 – 9)

4 × 6 4(9)

24 36

c.  Based on Sally’s work, what advice would you give to help her do better on her next set of problems.

Scoring Guide for “Sally’s Situation”

Score / Description
4 / All Parts are answered correctly and completely. Work is shown
3 / 4 problems worked correctly with a weak part c or 3 problems correct with relevant advice given for part c. Work is shown
2 / 3 problems worked correctly with a weak part c, or 2 problems correct with relevant advice given for part c. Work is shown.
1 / 1 or 2 problems worked correctly with a weak part c, or 1 problem correct with relevant advice given for part c.
0 / Response is totally incorrect or irrelevant.
Blank / No response.

Part A 1. 6

2. 21

3. 48

4. 60

Part B Problem 2 is correct

Part C Advice given to Sally should refer to using the correct order of operations. Specifically, Sally needs to be reminded of multiplying before adding (problem 1), that 42 is 4×4 = 16 (problem 3), and that when working with addition and subtraction, work whichever operation comes first in the problem (problem 4).