## Key Idea: Geometric figures, number sequences, graphs, diagrams, sketches, number lines, maps, and oral and written descriptions can be used to represent objects, events, and processes in the real world.

*Students are expected to know that**:*

- The term
*model*refers to a representation of something in the real world. - Models can represent objects.
- Models can represent events or processes.
- Geometric figures, diagrams, sketches, and maps can be used as models.
- Number sequences and graphs can be used as models.
- Oral and written descriptions can be used as models.

*Boundaries*:

- Students are not expected to know that simulations are examples of models.
- Students are not expected to know that mathematical statements or symbolic equations are examples of models.

Item ID Number |
Knowledge Being Assessed | Grades 6–8 |
Grades 9–12 |
Select This Item for My Item Bank |
---|---|---|---|---|

Both a map and a globe are representations of Earth (uses pictures). | 59% |
64% |
||

An object, event, or process can be represented with a model. | 64% |
57% |
||

60% |
61% |
|||

56% |
66% |
|||

62% |
53% |
|||

54% |
61% |
|||

57% |
54% |
|||

Both a drawing of a heart and a piece of clay shaped like a heart can be used as models of a heart. | 56% |
52% |
||

Both a car and a car crash can be modeled because both objects and events can be modeled. | 54% |
53% |
||

52% |
50% |

Misconception |
Student Misconception |
Grades |
Grades |
---|---|---|---|

36% |
43% |
||

37% |
36% |

Frequency of selecting a misconception was calculated by dividing the total number of times a misconception was chosen by the number of times it could have been chosen, averaged over the number of students answering the questions within this particular idea.