| Question 7: 1/2 □ 1/4 | Pre-service teachers N = 71 | Teachers N = 149 | ||
| Justification | % | N | % | N |
| Correctly answered | Pre-service teachers | 68 | Teachers | 120 |
| None given. | 19.7 | 14 | 49.7 | 74 |
| The sequence of numbers. | 18.3 | 13 | 2.7 | 4 |
| A quarter plus a quarter equals half. | 11.3 | 8 | 2.0 | 3 |
| Because half is greater than a quarter. | 32.4 | 23 | 12.8 | 19 |
| Based on number of items. | 14.1 | 10 | 13.4 | 20 |
| Incorrectly answered | Pre-service teachers | 3 | Teacher | 29 |
| None given. | 0 | 0 | 14.1 | 21 |
| The ¼ is larger according to the picture but ½ is larger according to quantity. | 4.2 | 3 | 0 | 0 |
| Based on graphic property. | 0 | 0 | 0.7 | 1 |
| We never learned fractions. | 0 | 0 | 4.7 | 7 |