I've tried your MVP out as a Programmer it's good to see a product that teaches children about IT while making it fun. I remember sitting through hours of lectures as a kid and trying to cram right before the exam. this would have been really useful when I was studying by allowing the user to select a whole course or a just a topic within the course you've made it easy to gain knowledge. I really like how you've included asteroids in your mockup. 

I have a question for you though When are you adding more courses to this?