This module discusses conducting surveys to gather information. It explains that a survey involves collecting data from a sample of a population to analyze trends, while a questionnaire simply collects answers to specific questions. The module then provides steps for constructing a survey, including clarifying the goal, selecting a sample to interview, choosing an administration method, and creating a data collection sheet. It emphasizes that a well-designed sampled survey can reflect the views of the entire population if the sample is carefully chosen. Surveys are used to collect opinions, behaviors, needs and attitudes in a uniform way from respondents.