Hmm, seem to be some missed opportunities here. Has your son even considered adding some affiliate links? Maybe some sponsorship from some great brands, I'm thinking Geico, maybe Disney, you know work with me here. Instead of math (borrrring..) how about some fun product related questions? Like: how many calories in Diet Coke (if your son can clinch the endorsement). Maybe he could start reaching out to influencers for some word of mouth, you know what I'm talking about.