http://gmc.yoyogames.com/index.php?showtopic=404154     quiz

http://www.youtube.com/watch?v=XDLd_Bo-knU        quiz

http://gmc.yoyogames.com/index.php?showtopic=476884   Multiple choice questions

http://www.youtube.com/watch?v=q8poeElsGkc    puzzle pieces