This study aimed to develop a two-tier light concept test to identify student concept understanding of light. The development of the test was carried out through the content validity, construct validity, and reliability test stages using the Item Response Theory (IRT). The sample consisted of 81 students during the second semester at five…

Assessment in education involves collecting and processing information related to student achievement during learning. Assessment activities help educators to find out where learners are having difficulties which for the sake of completeness requires an integrated instrument. The assessment carried out should conform to 21st-century learning…

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…

This research was a two-year developmental research that has resulted in validated teaching materials. The second-year of the research purposed to develop instructional evaluation materials, which can help to improve the quality of student learning outcomes. The teaching materials were used for elementary school student teachers at Universitas…

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 evaluate the psychometric properties of the developed diagnostic assessment test and to identify student misconceptions in science in terms of school grades. 153 students were gathered by using random sample from 10th to 12th grade in senior high schools. The 32 items of the two-tier multiple-choice diagnostic test were…

This research aims to produce feasible and valid assessment instrument of Higher Order Thinking Skill (HOTS) to measure students' Higher Order Thinking Skill in Physics learning. The type of this research was research and development, adapted from development model from Brog and Gall. The researchers modified Borg and Gall's development model as…

This study aimed to produce a valid and reliable assessment tool for junior high school students' integrated science learning and determine their improvement of science process skills (SPS) using the integrated science instruction. The research procedure consisted of ten stages, i.e., preliminary study, planning, development of draft assessment…