The final Q-matrix. Test items (condensed version) and identified CAs allocated to each item
| Item | CA1 | CA2 | CA3 | CA4 | |
|---|---|---|---|---|---|
| 1 | Sort the numbers from smallest to largest | 1 | 0 | 0 | 0 |
| 2 | 4–6 = _____ | 0 | 0 | 0 | 1 |
| 3 | Which of the expressions below contain negative numbers? 6 +(– 6), 6–5, 5–6, (−5) + (−6) | 0 | 1 | 0 | 0 |
| 4 | Which of the above expressions contain subtraction sign? | 0 | 1 | 0 | 0 |
| 5 | Which number is larger? 8 or (−9) | 1 | 0 | 0 | 0 |
| 6 | Which number is larger? (−6) or 0 | 1 | 0 | 0 | 0 |
| 7 | Which number is larger? (−14) or (−12) | 1 | 0 | 0 | 0 |
| 8 | 0–3 = _______ | 1 | 0 | 0 | 1 |
| 9 | Which number is in the middle of (−20) and 10 | 0 | 0 | 1 | 1 |
| 10 | How many negative numbers are in 3 – (−5) = 8 | 0 | 1 | 0 | 0 |
| 11 | How many negative numbers are in 5–3 = 2 | 0 | 1 | 0 | 0 |
| 12 | How many negative numbers are in (−7) – 2 = (−9) | 0 | 1 | 0 | 0 |
| 13 | 5–25 = __ | 0 | 0 | 1 | 1 |
| 14 | Use the number line to solve the subtraction 5–3 | 0 | 0 | 1 | 0 |
| 15 | Use the number line to solve the subtraction 2 – (−3) | 0 | 0 | 1 | 0 |
| 16 | Use the number line to solve the subtraction (−1) – (−4) | 0 | 0 | 1 | 0 |
| 17 | (-5) – 2 = __ | 0 | 0 | 1 | 1 |
| 18 | 7 – (−4) = __ | 0 | 0 | 1 | 1 |
| 19 | (-4) – (−1) = __ | 0 | 1 | 1 | 1 |
| 20 | (-6) – (−8) = __ | 0 | 0 | 1 | 1 |
| 21 | 0 – (−5) = __ | 0 | 0 | 1 | 1 |
| 22 | Insert missing number: 5 – ____ = 8 | 0 | 0 | 1 | 1 |
| 23 | Insert missing number:__ – 1 = (−5) | 0 | 0 | 1 | 1 |
| 24 | Insert missing number: __ – (−2) = (−4) | 0 | 0 | 1 | 1 |
| 25 | Insert one positive and one negative number: __ – __ = 5 | 0 | 0 | 1 | 1 |
| 26 | Insert two negative numbers: __ – __ = (−9) | 0 | 0 | 1 | 1 |
| 27 | Insert two negative numbers: __ – __ = 4 | 0 | 0 | 1 | 1 |
| 28 | Insert two negative numbers: __ – __ =(-12) | 0 | 0 | 1 | 1 |
| Item | CA1 | CA2 | CA3 | CA4 | |
|---|---|---|---|---|---|
| 1 | Sort the numbers from smallest to largest | 1 | 0 | 0 | 0 |
| 2 | 4–6 = _____ | 0 | 0 | 0 | 1 |
| 3 | Which of the expressions below contain negative numbers? | 0 | 1 | 0 | 0 |
| 4 | Which of the above expressions contain subtraction sign? | 0 | 1 | 0 | 0 |
| 5 | Which number is larger? 8 or (−9) | 1 | 0 | 0 | 0 |
| 6 | Which number is larger? (−6) or 0 | 1 | 0 | 0 | 0 |
| 7 | Which number is larger? (−14) or (−12) | 1 | 0 | 0 | 0 |
| 8 | 0–3 = _______ | 1 | 0 | 0 | 1 |
| 9 | Which number is in the middle of (−20) and 10 | 0 | 0 | 1 | 1 |
| 10 | How many negative numbers are in 3 – (−5) = 8 | 0 | 1 | 0 | 0 |
| 11 | How many negative numbers are in 5–3 = 2 | 0 | 1 | 0 | 0 |
| 12 | How many negative numbers are in (−7) – 2 = (−9) | 0 | 1 | 0 | 0 |
| 13 | 5–25 = __ | 0 | 0 | 1 | 1 |
| 14 | Use the number line to solve the subtraction 5–3 | 0 | 0 | 1 | 0 |
| 15 | Use the number line to solve the subtraction 2 – (−3) | 0 | 0 | 1 | 0 |
| 16 | Use the number line to solve the subtraction (−1) – (−4) | 0 | 0 | 1 | 0 |
| 17 | (-5) – 2 = __ | 0 | 0 | 1 | 1 |
| 18 | 7 – (−4) = __ | 0 | 0 | 1 | 1 |
| 19 | (-4) – (−1) = __ | 0 | 1 | 1 | 1 |
| 20 | (-6) – (−8) = __ | 0 | 0 | 1 | 1 |
| 21 | 0 – (−5) = __ | 0 | 0 | 1 | 1 |
| 22 | Insert missing number: 5 – ____ = 8 | 0 | 0 | 1 | 1 |
| 23 | Insert missing number:__ – 1 = (−5) | 0 | 0 | 1 | 1 |
| 24 | Insert missing number: __ – (−2) = (−4) | 0 | 0 | 1 | 1 |
| 25 | Insert one positive and one negative number: __ – __ = 5 | 0 | 0 | 1 | 1 |
| 26 | Insert two negative numbers: __ – __ = (−9) | 0 | 0 | 1 | 1 |
| 27 | Insert two negative numbers: __ – __ = 4 | 0 | 0 | 1 | 1 |
| 28 | Insert two negative numbers: __ – __ =(-12) | 0 | 0 | 1 | 1 |
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