I'm glad to see that my students aren't the only ones struggling with this issue. I put in a Contact Us-Feedback about this exact concern. My first graders can handle the multi-step looping in Course B fairly well, but my kindergarten students REALLY struggle with this. We've been working on lesson 9 for over a month now, and the kids are solving maybe 1 or 2 puzzles in a single class period, many with a lot of assistance from me. We pair program, so I usually have at least one student that sort of understands it, but not enough to keep it all running without my constant support. I did receive a fairly quick response when I put in my feedback through the Contact Us method, so you might want to try that as well.