The phrase "for teaching purposes" refers to using something or doing something with the intention of educating, instructing or imparting knowledge. Full definition
A gray - body model is sometimes used for teaching purposes to convey concepts. (realclimate.org)
We rarely focus on the disadvantages of diversification in investing because we are taught the purpose of portfolio diversification is to lower portfolio risk. (arborinvestmentplanner.com)
Classes are limited to 25 for effective teaching purposes. (iciworld.com)