This document discusses three common approaches to evaluation: qualitative, quantitative, and mixed methods. The qualitative approach uses open-ended questions to gather contextual information but is time-consuming. The quantitative approach efficiently collects numerical data but does not provide explanations. The mixed methods approach balances efficient data collection with contextual data by incorporating both qualitative and quantitative elements, though it is more complex and costly. The document recommends selecting the approach best aligned with the evaluation's goals and objectives.