The Development of Protist Culture Medium to Improve Senior High School Student’s Observation Skills

Abstract

Teachers and students have difficulty in observing protist spesies. The basic competence 3.5 oblige the
students to apply the principle of protist grouping classification carefully and systematically. Therefore, there
should be a media of culture protist along with its way and the students’ observation worksheet for protists.
This research is aimed to develop the valid and effective culture media of protist for class practice activities in
Protist Material. This research used Research and Development (R&D) method. Small scale trials were
done to 10 students using purposive random sampling. Big scale trials were done to 64 students. The validity
of protist culture was scored using validity sheets by validator, then was analyzed in percentage description.
The effectivity score of protist culture media was obtained based students’ processing skills score. The result of
the research showed that protist culture media was considered valid by experts with the average score of
90,1%. The observation of students’ skills showed that both classes of the research has classical grade of
85,3% and 87,1%. Based on the results, it can be concluded that protist culture media with its guidance and
students’ observation worksheet was valid and effective to be used by Senior High School students.