Consider introducing iteration in the section on lists, swapping section 4 and 5 #115
Description
Some participants struggled to understand the need to iteration when it was explained in section 4. It helped to provide an analogues as an example, such as marking a stack of essays. But in code it may make even more sense to use iteration when we start with lists.
However, parts of the section on lists also build on if/elif/else, so we cannot swap the sections as they are now.