You can communicate with your teacher and classmates on Canvas LMS by using the inbox, which is a messaging system that allows you to send and receive messages within Canvas. You can also participate in discussions, which are online forums where you can post and reply to comments related to a specific topic. Additionally, you can join live video conferences or chat rooms if your teacher enables them for your course.
Canvas login: https://lhsparker.instructure.com/login/canvas