Google Meet is the audio and video conferencing, chat, desktop screen-sharing and collaborative communication application included with G Suite for Education. Meet works from any web browser, so is compatible with MacOS, Windows, ChromeOS and Linux. There is also a Meet mobile app for both iOS and Android that will allow you to connect to a Google Meet video call on supported mobile devices.
Meet currently supports group video calls of up to 250 people if you are using your Beloit account to initiate the call, or up to 100 when initiating a call using a personal Gmail account.
Beloit documentation on Google Meet is below. Google also maintains extensive documentation and training materials on Meet in their Google Meet Help Center.