Mixed methods research involves collecting and analyzing both quantitative and qualitative data within a single study or series of studies. This approach allows researchers to understand research problems more fully than using either quantitative or qualitative methods alone. Researchers can collect quantitative data through methods like questionnaires, surveys, and attendance records, and qualitative data through interviews, observations, and document analysis. The mixed methods design considers the priority and sequence of quantitative and qualitative data collection and analysis. Reasons for using a mixed methods approach include explaining and interpreting results, exploring phenomena, and developing and testing new instruments.