I found Code.org’s bubble 3 (U5L7) very confusing. I think that there was an issue in the copying of the image. Here is a slide that conveys the same data: https://docs.google.com/presentation/d/1-NnNnf-cZ75CRZmbhmntqZTVX1WBOw8hSJEiajBI4Es/copy
At first, I had to search a bit for the changes you made but I like them. Thanks for sharing.