Thanks for the explanation and ideas Tim. I've added the idea to the (rather large) TODOs list.
Robert: we often ask questions that build in the way you describe. Questions often start with wording like "Extend your answer to the previous question to ... ". Students nearly always do questions in order and I don't recall any problems from students trying to jump ahead in a sequence of clearly co-dependent questions.
Robert: we often ask questions that build in the way you describe. Questions often start with wording like "Extend your answer to the previous question to ... ". Students nearly always do questions in order and I don't recall any problems from students trying to jump ahead in a sequence of clearly co-dependent questions.