When logging into Office 365 you will be presented with the below landing page.
Then on the side of your home screen you will have some buttons which have key apps such as Word, Excel, PowerPoint and One Drive and Teams. You may not see all of the icons below, but that’s okay because some features may have been disabled.
If you hover over the icons, it will tell you what they are. One of these is Microsoft Teams. It looks like the below-
Then the Teams page that loads looks like the below-
Down the left hand side, there is an option that says Teams and the students class team will be available here.