Electronic Theses and Dissertation

This research aims to determine the differences in critical thinking skills
and cognitive learning outcomes, as well as the responses of students who taking
conventional learning and virtual labs on the concept of the human breathing
system. The method used is an experimental method by design pretest-posttest
control group design. The research population is high school students at class XI
in the second semester of school time. Two classes with 25 students each were
chosen purposively for experiment and control class. The experimental classed
was taught by using learning media of virtual laboratory software, while the
control class was taught with conventional learning and both classes were applied
the Direct Instruction Model. Pretest and posttest on critical thinking skills and
cognitive learning outcomes of the students in both classes were compared and
analyzed by using a test; essay and multiple-choice performed with t-test
(Independent Samples t-Test). The research results shows that students at
experimental class have significantly higher posttest scores than the their peers in
control class with p < 0.05. Majority students gave 94.8% of positive responds on
the using of virtual laboratory software for the learning media of human breathing
system.

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