This document provides an introduction to educational research. It defines research as a systematic process involving steps such as data collection, analysis, and interpretation. Research can be scientific inquiry that develops knowledge through examining empirical relationships between phenomena. There are two major approaches to educational research: quantitative and qualitative. Quantitative research uses numbers and statistics to objectively test theories and relationships, while qualitative research explores phenomena through open-ended questions, observations, and interviews to understand multiple realities. The document outlines different research designs within these approaches such as experimental, non-experimental, case study, and grounded theory designs.