Abstract
This activity was presented at PBE 2018 as a model piloted on a group of chemistry pre-service teachers. In this paper the same, only slightly modified activity, was evaluated on one class of 8th graders.
They underwent a four-lesson-long course which consisted of a traditionally-designed activity and an activity with inquiry context. The effect of the activity was measured using a pre- and post-test focused on the students' knowledge about the topic and the IMI questionnaire to assess their intrinsic motivation.
The students were also interviewed in groups for the researchers to find out more about their opinion about the activities. The results show majority of the students improved in the pretest.
The results of the IMI suggest the inquiry-based versions of the activities were more successful.