Student information system

1. Student sign-in list: Displays students who have completed sign-in. The teacher will check and click to complete the final sign-in to ensure the authenticity of the sign-in.

2. End sign-in button: Click by the teacher after class time to end sign-in. Students who have not signed in will be recorded as absent from class.

3. Interaction: Students can initiate classroom functions previously added by the teacher, and interact after being triggered by the teacher.