This document outlines different research approaches and methods for studying technology-enhanced learning. It discusses three main research typologies: 1) hypothesis testing, exploratory, and design-based research approaches; 2) quantitative and qualitative research methods; and 3) research purposes like data collection, development, and analysis. For each typology, it provides examples and explanations of specific methods. A common challenge in this research field is that technologies are always new, which can lead to biases like an association of technologies with positive changes or novelty effects.