Piazza
Piazza in a free discussion board platform that handles LateX and code snippets making it popular for Math and CS courses.
Creating a course
Additional Resources:
Optional Settings:
Syncing class roster
Enroll Your Students on Piazza
Adding instructors
Adding TAs
Settings (visibility of posts to instructors and others)
Course Page Visibility Settings
Prevent Students from Making Anonymous or Private Posts
Creating groups
Enable Group-Based Discussions in Your Class
Creating Instructor notes
Additional Resources:
Creating folders
Create Folders to Organize Posts
Creating polls
Live Q&A sessions
How to start and end 'Live Q&A'
How does a 'Live Q&A' session work
Moving posts from 'Live Q&A' to your main class feed
Monitoring activities and student statistics
Advice on instructor responses
Encourage Students to Answer - Set Timer Delays