Google Classroom is a free web service created by Google for educational institutions, designed to simplify the process of creating, distributing, and grading assignments electronically. It enables teachers to manage classes, assign work, provide feedback, and monitor progress from a centralized platform. Accessible to anyone with a Google account, it works on both Android and iOS devices.

To join a Google Classroom class, you need a class code provided by your teacher. Open the Google Classroom app, tap the '+' icon, select 'Join class,' and enter the code. Ensure you are logged into your Google account before joining. The procedure is identical on both Android and iOS devices.

Yes, Google Classroom supports offline functionality. Students can review assignments, read class materials, and take notes without an internet connection. However, submitting completed work or accessing the latest content requires an internet connection. This feature benefits students with unreliable or limited internet access.

Google Classroom is built with security and privacy considerations, complying with laws such as FERPA, COPPA, and GDPR. Google does not own student data nor use it for advertising. Teachers and administrators control class access, promoting a safe learning environment. It is advisable to review Google's privacy policies for detailed information.

Google Classroom can be used on any device with internet access and a modern web browser, including laptops, desktops, tablets, and smartphones. The dedicated Classroom app is available on Android and iOS, providing a consistent experience across devices and enabling users to access classes conveniently from various platforms.