Texas Instruments TINSPIRE Teacher Software Guidebook - Page 445

Setting variable values with a slider In the Graphs and Geometry applications, a slider control lets you adjust or animate the assignment of values for a numeric variable. Use a slider to represent multiple variable values in a continuous range. 1. From the Document Tools menu, select Actions > Insert Slider. Handheld: Press b 1 A to insert a slider. The slider displays on the work area. If you need to adjust or animate value selection for more than one variable, you can repeat this step and insert multiple sliders. Note: You can access the context menu to Pin a slider to its location and prevent unintentional movement. 2. Click the slider to activate it and press e to move between the slider scale and the variable's value. 3. Use ¡ and ¢ to move the slider on the scale. 4. Press Enter to select the value. Access the context menu and choose Settings to view or change the default slider settings. Naming variables Variable and function names that you create must meet the following naming rules. Note: In the unlikely event that you create a variable with the same name as one used for statistical analysis or by the Finance Solver, an error condition could occur. If you begin entering a variable name that is already in use in the current problem, the software shows the entry in bold to let you know. • Variable names must be in one of the forms xxx or xxx.yyy. The xxx part can have 1 to 16 characters. The yyy part, if used, can have 1 to 15 characters. If you use the xxx.yyy form, both xxx and yyy are required; you cannot start or end a variable name with a period "." Using Variables 433