摘要:This review sets out to map research relating to the concept of peer observation when teachers observe lesson of another teacher which is on same level. The review builds on journal papers included in the Web of Science and/or ERIC databases. The study uses documents analysis when the units of analysis are concepts of peer observation, research aims and research methods of studies. The review aims to answer the following questions: What are the objectives of studies focused on peer observation of teacher in the studies? Which methods and approaches do the studies use? What are the results of these studies? The authors conclude the review with a summary of its findings and a discussion. There are a number of research instruments and methods for investigating peer observation by qualitative approach, but the challenge now is to develop ways of quantitative research approach.