Set up a diary at the beginning of your project. This will provide evidence of a lot of user involvement and Software Development. It should ideally be a paper-based diary (unless your had-writing is poor!).

The typical sections you should have are:

• Who you saw and when.
  
• Why you saw them.
  
• Briefly what was discussed.
  
• What action points came out of the meeting.
• Signature and date from the user.
  

Each time you need to meet your user, take along your diary, fill it in there and then and get a signature. Diaries done at the end of a project easily stand out to teachers and moderators as forged or largely made-up, so avoid this by doing it properly!

You should be meeting your user regularly and getting evidence of regular meetings.