To teach a 6th grader about the design cycle i have compared both ClassTools.net And Purpose Games.com and overall decided to go with ClassTools.net since the format in which this site attempts to teach is very intriguing and eye appealing where as Purpose Games is too direct and simple.

ClassTools.net gives off a rather interesting setting to the game in which every question that is answered correctly is rewarded with an intriguing point system.Purpose Games give no award to every question.