Level 1

Follow up

Organise a short scrimmage during practice. Have two players stand with you, one looking at the offence and one at the defence. Have them provide feedback to the team (or to you), which can help to see their understanding of the team concepts. Do another scrimmage and have a different two athletes standing with you.
Conduct shell drill where 4 of your players are the defenders and 4 coaches/parents are the offensive players – passing the ball around the perimeter. Have 4 players on the baseline with their eyes closed and allocate each of them to one defender. After 30-45 seconds of passing (during which the baseline players have kept their eyes closed) and have the baseline players identify where their player was on the court (e.g. defending the ball, high split, low split). They will only be able to do this if the team has good defensive communication.
Have each player in your team assess how well they think they understand the help rotation principles in half court defence. In a contested scrimmage activity, what is the correlation between how well players assessed their understanding and their actual performance?