Challenge and flow

As we build more motivators/ rewards into a games can we also ask more? I know from being in the classroom that the real learning happens during 'flow' (yes my parents were hippies!). During flow time stops and nothing else exists, its when we are totally absorbed in what we are doing. Will we create 'flow' opportunities if our activities are not challenging and the rewards come too easily? Really hard to pitch!

A simple example is do we demand that a child completes a letter perfectly 3 times before they get the reward activity, or would this put them off? As a educator I believe challenge is motivating, as an inexperienced producer (I have no idea what to call myself as wearing so many hats!), I want to reduce risk and avoid putting people off by being demanding. 

The solution 
1. Test it out, we did and surprise surprise children are all different! (there is 'no average', see previous post). 
2. Offer 'challenge mode', so that children/ parents/ teachers can set the bar a little higher at times (differentiate). Another step towards bespoke learning environments.