We have recorded 4 videos capturing the students' interactions with each other and with our serious game during its use. The video recordings lasted in average 7 minutes 50 seconds (minimum = 3 minutes 30 seconds; maximum = 12 minutes 34 seconds). We have also recorded the verbalizations related to the actions and mental operations implemented in these situations, the actions of the students, and the dialogues involving the students and the professor. These were verbalizations simultaneous to the completion of the game task, but also dialogues between participants about the game or their ongoing activity. The audio-recordings were made using a dictaphone and the CamStudio software was used for the audio files postprocessing. The audio recordings were transcribed verbatim and constituted our corpus composed of 111 lines. We have then proceeded with the segmentation of the corpus into units (one unit corresponding to each participant's speech), the characterization of the participant who produced the unit (role of the speaker in the game, e.g. student in charge of the solar panel), the coding of each unit in order to characterize its type of contribution in the activity, and the grouping of the units into an activity chronicle.