The purpose of this research is to examine measurement invariance of collaborative problem solving skills measured by PISA 2015 Xandar subtest for Singapore, Norway, and Turkey. The research was conducted with 2990 participants' data obtained from Turkey (1032), Norway (923), and Singapore (1035) on PISA 2015 collaborative problem solving study.…

This cross-sectional study aimed to validate students' metacognition awareness inventory in Heat and Temperature material. A total of 167 public senior high school students in Yogyakarta, Indonesia were selected through convenience sampling technique. The heat and temperature metacognition awareness inventory (HeTMAI) inventory consists of six…

The aim of the study was describing the development and validation of students' perception on learning by questioning (LBQ) scale in physics. Research and Development (R & D) design was utilized in the research method. The number of senior high school students involved in the research were 224 students, composed of 95 boys (42.41%) and 129…

This study aims to develop a multidimensional 21st century skills scale for adolescent and early adulthood students in the 15-25 age group. The research was conducted with 660 high school, associate degree and undergraduate students. From the item pool created during the first stage of the study, 146 items were selected in line with expert…

The problem-solving inventory (PSI) is the most widely used applied problem-solving measure in the United States. Although a great deal of validity and reliability information exists for the PSI, much of this data has been collected in the United States. The purpose of this study was to examine the PSI's psychometric estimates with a large sample…