Problem 1 - collaboration
Problem 2 - broken silence
Problem 4 - students stuck
Problem 5 - biased sample
Problem 6 - practice makes permanent
Tip 1 - Always start practice with a period of silent, individual work
Tip 2 - Wait for Golden Silence
Tip 3 - Try to standardise the format of the practice
Tip 4 - Teach students what to do when they are stuck
Tip 5 - Use mini-whiteboards to support bookwork
Tip 6 - Consider giving access to answers
Tip 7 - Use small chunks of practice at the start
Tip 8 - Resist the urge to interrupt when students are silent
Reflection on all 8 ideas