This is a really cool example of a motivational technique! I love how the learners still receive something even though they got the question wrong. I think that helps motivate them to try get a better reward next time. Most examples I have seen the learner is not rewarded when they get something wrong so this is a great idea.
I am interested to hear what ideas others have for motivational techniques. I usually use points and badges but I would like to explore more opportunities. In my Kitchen Master game
http://www.taniavercoelen.com/kitchenmaster/story.htmlI was thinking about rewarding the learner with a recipe that they could collect and add to their recipe book. In the end I just stuck with badges (Junior Chef, Assistant Chef, Head Chef badge etc).
One idea I use for badges is giving the learner and opportunity to receive a bronze, silver or gold badge. I found that learners were more motivated having the gold badge to aim for as they weren't as excited about receiving a bronze or silver badge and they were more likely to have another go just to get the gold badge.