Hold yourself to the same standards your students comply with to reinforce that these standards exist for a reason, out of respect for each other and learning.
Ask students to reflect on what could have done differently when a class or project doesn’t go well in order to work together to improve future coursework.
Get feedback from your students before the course is over so you have time to implement their suggestions!
Remind students that you’re there to help them, especially when students apologize for asking a question.
Focus your grading on student understanding rather than creating a curve to help each student learn as much of the content as they can.
Let students know it’s okay to make mistakes, you’ll learn just as much (and sometimes more) than when something works.
Provide copies of the reading from the correct version of the textbook or assignments for different versions to ensure all students have access to the correct materials.
Have each student contribute test cases to a class-wide testing suite for assignments in order to get students thinking about edge cases and improving their implementations.
Show students how to use StackOverflow appropriately to establish standards for using internet resources in your classroom and beyond.
Have students explain their problem and ask questions about it to an inanimate object when debugging so they have a clearer idea of what the problem is before asking for help.