Teachers can present a student's screen to all other students in the class by using Student Screen Share. This tool is available when a class session is active.
To use this tool, go to Detail View of any particular student and click the Share Screen icon in the lower right.
Upon clicking Share Screen, you will be presented with this confirmation dialog box. This also gives you the option to lock other students to the shared screen.
Once you confirm, the student will be presented with their own dialog box. Once they click Ok, their screen will be shared with the rest of the class.
You can end the screen share session by clicking the Stop button.