A research technique, particularly associated with the work of John Elliott, in which evaluation is carried out by means of a threefold process. The teacher has a view of what he/she wants to do (and of how successfully he/she has achieved it); this...

An approach to research in which two or more different methods are employed to study the same phenomenon in order to understand it more fully. It is a useful approach in studying the education of adults. Used to account for reliability in...

A method of surveying in which the position of a third point or object is determined using angles from two points of a known distance...

Method of measurement of a crime scene and physical evidence; every item of evidence is measured from two fixed...

In trigonometry and geometry, triangulation is the process of finding coordinates and distance to a point by calculating the length of one side of a triangle, given measurements of angles and sides of the triangle formed by that point and two other...