EROSI—visualising recursion and discovering new errors

摘要: This paper introduces a novel software visualisation aid, the EROSI (Explicit Representer Of Subprogram Invocations) tutor, hypothesised to support acquisition (by novice programmers) of mental model facilitate comprehension and use recursion as problem solving technique. Novices found tutor easy use, interesting valuable aid forming correct models recursive processes. Studies concluded that although novices many have recursion, various errors misconceptions (identified) due exogenous factors affect their ability complete tasks.