You can use teams in your Laptop, desktop, or any mobile devices (iOS android) as well. You can use teams from the Microsoft website as well.
For desktop or Laptop (access it from the web)
If you want to download and use it as an application:
iOS (Apple): https://apps.apple.com/us/app/microsoft-teams/id1113153706
Android (Samsung, Oppo)
Once you download it or open it, just enter your email address provided by . Student name or id @sccm.edu.au
(if you don’t have your details, please check your email. We should have to send one recently. If you still cannot find it, contact helpdesk at SCCM.)