After that, the data were analysed using thematic analysis, while the validity of data using triangulation, member checking, and reflexivity. The data were collected from tests, document analysis, and interviews. The type of data collected is test results about ill structured problem-solving.
The research approach used is qualitative with the case study method. This study involved 34 students of the 4th grader in one Madrasah Ibtidaiyah in Bandung. This study aims to explore the numeracy literacy of students in ill-structured problem-solving on the matter of numbers.