In the first session, This module was aimed at the students ’ learning of the effects of heat on particles formed matter and, in the second session, the students’ learning of the correlation between heat transfer in matters and collision of molecules. Module preparation consisted of two sessions; each session included a scenario and concept cartoons about the solving of problem in that scenario. The scenario, included in the first session, was presented as follows. On a hot summer morning, Özge, with her mother and father, went by train to visit her aunt in Ankara. Özge was very happy about taking a journey with her family. In the course of the journey, Özge decided to drink tea with her mother. However, since the weather was very hot, Özge added cold water to her tea. Özge and her mother drank the tea with a cube of sugar. Both of them, at the same time, put in a cube of sugar and waited without stirring. After a while, Özge realized that the sugar, in her mother’s tea, had dissolved quicker and she was surprised by this event. Despite putting in a cube sugar to their tea at the same time, she did not know why a cube sugar had dissolved quicker in her mother’s tea. Afterwards, this scenario was presented to students who were asked to determine problem in the scenario by researching the necessary subjects and existing knowledge. After the students had finished researching the subjects, they started to solve the problem. At this point, the students were presented with the first concept cartoon.
After the students solved the problem in the first session, the second session started and the following scenario was presented to the students. After this was done, the learning process was carried out, similar to the first session, and the following second concept cartoon was presented to the students. Özge, who liked train journeys by train, became exhausted from the heat. She decided to look out the window both to become cooler and to watch the railway. She looked at the railway with admiration since, amongst the trees, the railway seemed to be very beautiful. However, when she looked at it carefully, she realized that the railway curved in some places. Özge, who knew that the railway was made of iron, did not understand how rough matter, like iron, was able to warp. The students discussed the problem by sharing, through concept cartoons, their opinions with friends. Through cooperation, they explained their opinions and solved the problem by means of reasoned study. In this process, the teachers were the tutors and the students solved the problem by self-directing their learning and inquiries.