Chemistry experiment is essential in chemistry teaching. The present action research was aimed at identification and implementation of IBSE elements to the experimental activities at lower-secondary school.
By linking observation with analysis of students' experiment descriptions, the original state of experimentation was evaluated. At first, most of the activity was teacher-centered.
Students' understanding to the nature and the purpose of the experiments was also on a lower level. The intervention caused student activization.
However, only the changed design of the experiment itself seems insufficient for the students' understanding the experiments.