I agree with sean on the presentation methods...

BUT, i would always put some animations into the presentation as this will detract from any weaknesses in your material!!! (Experience from teaching, doing a degree, masters and PGCE!!! sad or what??).....

As regards diagrams... use process diagrams available in word (under > Insert > diagrams) I am sure there is a way u can adapt these diagrams to get a point across.. e.g - use the cycle diagram to illustrate a critical operational path that is being broken/disrupted by poor practise etc.....

Seems like a prime waffle opportunity to me - he who waffles best, wins!!!

Good luck