Development of CO-MMUNE Supplements on Immune System Material to Improve Concept Understanding and Health Literacy of High School Students

Abstract

This study aims to analyze the validity, feasibility and effectiveness of health case-based
learning supplements to increase the level of concepts understanding and health literacy of high
school students on immune system material. It is a type of R&D research using the development
method by Sugiyono. The development process is carried out by conducting links to various
articles related to Covid-19 infection cases in national and international journals. The supplement
testing phase consists of three stages, namely validity test, feasibility test and effectiveness test.
Validity tests include material validity tests and media validity tests conducted by material and
media validators. The feasibility test and effectiveness test were carried out at Senior High School
1 Tayu. The population of this study was all grade XI mathematics and natural sciences students
at Senior High School 1 Tayu with class XI MIPA 4 as a sample. Sample selection is carried out
using the purposive sampling method. In collecting data on the effectiveness of supplements to
improve students' understanding of concepts and health literacy, a one group pretest-posttest
design was used. Observation and interview sheets, validation questionnaire sheets, student and
teacher response sheets, comprehension test questions and health literacy questionnaire sheets
based on HLS-EU-Q indicators were the instruments used in this study. Based on the results of the
material validity test and media validity, it shows that the supplement is in the very valid category
with a percentage of material validity of 91% and media validity of 94%. Based on the results of
the feasibility test from the responses of teachers and students, supplements get a percentage of
83% and 93.5% which are included in the very feasible criteria. Based on the results of the
supplementation effectiveness test, students' concept understanding showed that 77.14% of
students had reached the minimum completeness category whereas, the health literacy index score
showed that 94.2% of students had achieved an adequate health literacy index. These results show
that the CO-MMUNE learning supplement prepared based on Covid-19 cases is valid and feasible
for use in learning and is effective in increasing understanding of the concept of immune system
material and literacy student health. The use of health problems as learning materials in the
classroom will provide a good understanding of health so that it has the opportunity to become a
means of increasing health literacy.