You can configure the Simple Features calculator in the same way that you can configure the Calculator Feature. Choose from the Basic calculator mode, or from the Scientific mode.
Figure 1 - Scientific calculator.
Figure 2 - Basic calculator.
If you have selected Basic, enabling the extended option will display a CE, % and √ button on the calculator - these are hidden by default.
If you have selected Scientific, you can set the default unit to be either in degrees or radians.
The calculator will appear to the student as a button, labelled 'Calculator', and clicking this will show the calculator.