The study aimed to measure the validity of critical thinking instruments and determined the differences in critical thinking skills in terms of gender and knowledge group. The study was used survey method. Critical thinking instruments were developed based on the Facoine's (2015) indicators of critical thinking. Data were obtained from 285…

The new generation of natural science teaching material in elementary school is the teaching material that utilizes inquiry-based learning in most parts of the tutorial and the provided material. The updating of teaching materials is an activity that must be carried out by the Universitas Terbuka to assure that the quality is following the…

This study aims to describe: (1) The validity and reliability of the PISA model mathematical problems on the change and relationship content developed; (2) The practicality of PISA mathematical problem models on the developed change and relationship content; (3) Students' mathematical problem-solving abilities on mathematical problems in the PISA…

This study describes the characteristics of the test and its items used in the national-standardized school examination by applying classical test theory and focusing on the item difficulty, item discrimination, test reliability, and distractor analysis. We analyzed response data of 191 12th graders from one of public senior high schools in…

Teachers who can adapt and be ready for all changes will also be able to provide a balance to increase the competence of vocational high school students. This is also not denied when teachers become assessors in student competency tests. The objectives of this study were to produce an instrument for the readiness of teachers as assessors; to…

Assessment of higher-order thinking skills (HOTS) provides few opportunities for students to develop more in-depth knowledge, serving students' ability to identify and solve their problems. One type of instrument for measuring HOTS objectively is the two-tier multiple-choice test (TTMCT). This research is part of the research and development…

This research aims to reveal the effectiveness of the use of Kofie GeBoL media in improving (1) vector representation ability and (2) critical thinking ability in physics instruction. It is a descriptive quantitative study with the quasi-experiment design. It was conducted in two stages: empirical try out and implementation of Kofie GeboL to see…

Teacher education in Indonesia aims to prepare pre-service teachers in becoming professional teaching personnel. Two important knowledge need to be acquired are content knowledge (CK) and pedagogical content knowledge (PCK). However, it is still a challenge to measure the pre-service mathematics teachers' CK and PCK. Therefore, the first aim of…

The purpose of this research is to develop test questions of problem solving ability on work-energy material for high school students class X. This type of research is research and development. The model used in this study is ADDIE with the stages of analyzing, planning, developing, implementing, and evaluating, but this study only up to the…

This study aims to develop the teacher's perceptions of critical thinking in science learning in elementary schools. The samples in this study were 50 elementary school teachers in Central Java. Selection of samples employed convenience sampling. The instruments in this study used a modified Likert Scale. The validity tests used in this research…

Purpose: Essay test in mathematics, both in the form of restricted-response and extended-response, generally consist of polytomous scored items. However, the essay test used by teachers in Indonesia has not been fully supported by sufficient quality evidence. There have been many studies focusing on the development of the essay test, but not many…

Assessment is a topic that continues to be developed in science education research. Assessment evaluates not only students' cognitive abilities but also their thinking skills. Therefore, in this study, an assessment that could measure students' chemical literacy was developed. Chemical literacy is a thinking skill that students must develop as…

The study is aimed at (1) describing students' CTSP, (2) comparing CTSP between male and female students, (3) identifying the highest and lowest sub-aspects of students' CTSP. The research subjects were 534 students of the State Senior High School in Bantul Regency, obtained by a stratified random sampling technique. The testing instrument was the…

This study aims to design mathematical literacy instruments that have evidence of content and construct validity and are reliable for use as an assessment for learning. The research involved eight experts as instrument validators and 273 eighth-grade students of junior high school in Yogyakarta Province. The results showed that the ten…

During the COVID-19 pandemic, various applications of genetics were used as a basis for studying the origin of the virus to diagnosing patients with this disease. Student literacy about COVID-19 from the genetic aspect will strengthen them in dealing with misinformation in a society that rejects the existence of COVID-19. This study aimed to…