The new learning unit on animal behavior, in which a Siamese fighting fish was used as a model, was developed
based on three-phase learning cycle theory. In this newly developed learning unit, a hands-on activity was used to
enable the students to construct knowledge and experimental skills within laboratory session. Finding from
experimental skills test found that students in experimental group showed a significantly higher posttest scores when
compared to those of the control group. This is because the students in experimental group had opportunities to set
hypothesis, identify variables, design and conduct experiment as well as collecting data whereas students in control
group did not have chances to do hand-on activity, instead they were assigned to read article about aggressive
behavior of the fighting fish. Thus, the control group students did not acquire those scientific process skills,
resulting in very low scores (less than 40%). This results in agreement with several studies reported that learning by
The new learning unit on animal behavior, in which a Siamese fighting fish was used as a model, was developed
based on three-phase learning cycle theory. In this newly developed learning unit, a hands-on activity was used to
enable the students to construct knowledge and experimental skills within laboratory session. Finding from
experimental skills test found that students in experimental group showed a significantly higher posttest scores when
compared to those of the control group. This is because the students in experimental group had opportunities to set
hypothesis, identify variables, design and conduct experiment as well as collecting data whereas students in control
group did not have chances to do hand-on activity, instead they were assigned to read article about aggressive
behavior of the fighting fish. Thus, the control group students did not acquire those scientific process skills,
resulting in very low scores (less than 40%). This results in agreement with several studies reported that learning by
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