Mathematical abstraction skills are fundamental for advanced reasoning and problem-solving, yet assessing these skills in senior high school students poses challenges due to limited validated instruments. This study aims to develop and validate a test instrument for measuring mathematical abstraction skills in Indonesian high school students. The…

This study aimed to develop a three-dimensional geometric thinking test to determine the geometric thinking of early graders in the paper-pencil environment. First, we determined the components of three-dimensional geometric thinking and prepared questions for each component. Then, we conducted the pilot studies of the test at three stages in six…

Validity evidence based on content is critical for making inferences about examinees' responses to test items. Traditionally, content validity has been established by specifying the content domain of an instrument, through reviews by subject-matter experts, through alignment studies, or by reporting measures of internal consistency, such as…

The aim of this research is knowing whether research instrument is feasible or no to get data of research. The instrument of this research is logical mathematics quotient test with 25 problems in multiple choice and mathematics problem solving test with 4 questions in essay. Testing the appropriateness of instrument of logical mathematics…

Introduction: The Approaches and Study Skills Inventory for Students (ASSIST Short Version) was used to better understand the students' approaches to learning in a mathematics classes. Method: Quantitave method was used in this study. Participants were 345 first and second year mathematics students from a university in the Gauteng province of…

Describes the development of the "Standards Beliefs Instrument," an instrument to measure teachers' beliefs about the NCTM "Curriculum and Evaluation Standards." Discusses implications for using the instrument for self reflection, assessment of teachers' perspectives toward the vision of the "Standards," and…