Perform role-play skits to show both positive and negative pair-programming dynamics so that students have memorable and easy to reference examples when providing constructive criticism to other students.
When pair programming in class, set a timer for when students should switch roles of driver and navigator. When the timer goes off, have students stand up, switch chairs, and give each other high fives.
Assign each student in a pair programming partnership to the role of 'driver' or 'navigator' to allow students to start working together without having to negotiate roles.
Have students work on their own when first introduced to material then progress to pair programming projects to optimize pair programming outcomes.
If the Navigator is too controlling when pair programming, have that student write down instructions instead of speaking them.
Start the day with students pair programming and then split them up; it makes later collaboration natural and reduces frustration.