By contrasting critical aspects in a dimension of variation, the learning object can change form and be experienced in different ways which influence the students’ ability to learn. To investigate in which ways the contrasts affect the students’ learning outcome was the primary focus of the study, but the results also show an interesting pattern of how students’ learning outcome in short and long time perspective are affected. We have worked with learning study as a method, and the results are based on analyses of three learning studies made up of three lessons each. The results show how one pattern offers the students to look critically upon their previous knowledge and make them find new ways of seeing the object of learning. This pattern has also been found to be more powerful in preparing students for future learning, since it seems to generate new learning after the learning situation itself.