Original Project
Models
There is no guarantee that ideas based solely on a model are correct.
Item MO026003: An engineer could use a model of a machine to show someone else what the machine is like, or to help him/herself think about how the machine works.
Which of the following statements describes why an engineer might use a model of a machine?
-
To show someone else what the machine is like,
or to help himself think about how the machine works -
To show someone else what the machine is like,
but not to help himself think about how the machine works -
To help him think about how the machine works,
but not to show someone else what the machine is like -
Neither to show someone else what the machine is
like
nor to help think about how the machine works
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 1116 | 1574 | 71% |
| Grades | |||
| 6–8 | 673 | 988 | 68% |
| 9–12 | 436 | 578 | 75% |
| Gender | |||
| Male | 501 | 752 | 67% |
| Female | 593 | 789 | 75% |
| Primary Language | |||
| English | 1028 | 1437 | 72% |
| Other | 57 | 94 | 61% |