Create Object Sets Sub-Tab

The Create Object Sets sub-tab allows you to create the object sets that the machine rubric uses to categorize the objects in the answer space. The types of objects in the answer space depend on the interaction type. For each object set, you specify one or more properties to determine which objects belong to that set.

Figure 12: Grid Interaction Editor Window: Standard Grid: Variables Tab: Create Object Sets Sub-Tab

Grid interaction editor window: standard Grid: Variables tab: Create Object Sets sub-tab

You can manage properties in the Object Set panel (Figure 13), which appears when you add a new object set. For examples of the Object Set panel logic, refer to Appendix C.

Figure 13: Grid Interaction Editor Window: Variables Tab: Create Object Sets Sub-Tab: Object Set Panel

Object Set panel

This panel includes the following:

The Name field allows you to enter a name for the object set in this field. The name must be unique and cannot contain spaces.
The Description field allows you to enter a description for the object set in this field.
The Object being considered drop-down list allows you to select the name of the object you want to apply operations to.
The And operator button puts properties in a group in which all affiliated properties must be satisfied for an object to be included in the set.
The Or operator button puts properties in a group in which only one affiliated property must be satisfied for an object to be included in the set.
The Back button is not used.
The Delete button immediately below the Object being considered drop-down list deletes the selected property or operator.
The Add Property button adds a new property to the object set and opens the Object Property window.
The Object Set box displays the properties and operators added to the object set. You can click an element in this list to modify or remove it.
The Save button saves the object set.
The Cancel button closes the panel without saving changes.
The Delete button immediately below the Object Set box appears after the object set has been saved. Click this button to delete the object set. You can only delete when there are no variables associated with the object set.

To create a new object set:

1.In the Create Object Sets tab (Figure 12), click Add. The Object Set panel appears (Figure 13).

2.In the Name field, enter a unique name for the object set.

3.In the Description field, enter a description for the object set.

4.Click Add Property. The Object Property window appears (Figure 14).

Figure 14: Object Property Window

Object Property window

5.Enter a description for the property in the Description field.

6.Select a category from the Category drop-down list (the options in this list depend on the interaction type).

7.Select a property from the Property drop-down list (the options in this list depend on the selected category). A description of the property appears, along with any associated parameter fields (which depend on the category and property).

8.Set parameters for the property and click Save. The property appears in the Object Set panel.

9.To create additional properties, use the operator buttons on the Object Set panel as needed. Repeat steps 4–8 for each property.

10.When you are finished defining properties for the object set, click Save at the bottom of the Object Set panel. The object set appears in the Available Object Sets list on the Create Object Sets tab.

11.To save the object set, click in the upper-right corner. Click OK in the confirmation pop-up that appears.