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Problems with understanding concepts, so called misconceptions, have been investigated and reported in a number of studies regarding object-oriented programming 4, 3. In a first programming course using an object-oriented language, it is of great importance that students get a good understanding of central concepts like object and class at an early stage of their education. We have, with a phenomenographic research approach, performed a study with first year university students, investigating what an understanding of the concepts object and class includes from a student perspective. By applying variation theory 8 to our results we are able to pin-point what the students need to be able to discern in order to gain a rich understanding of these concepts.
Eckerdal et al. (Mon,) studied this question.