This commentary first summarizes and discusses the analysis of the two translation processes described in the Oliveira, Colak, and Akerson article and the inferences these researchers make based on their research. In the second part of the commentary, we describe procedures and criteria used in adapting tests into different languages and how they may apply to adaptation of instructional materials. The authors provide a good theoretical analysis of what took place in two translation instances and make an important contribution by taking the first step in providing a systematic discussion of adaptation of instructional materials. Our discussion proposes procedures for adapting instructional materials for examining equivalence of source and target versions of adapted instructional materials. We highlight that many of the procedures and criteria used in examining comparability of educational tests is missing in this emerging research of area.