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The purpose of the study was to produce a Physical Chemistry 3 (PC3) Structured Lecture Material (SLM-PC3) that was feasible to facilitate students to achieve the minimum ability in argumentation skills (AS), science process skills (SPS), and problem solving skills (PSS) as part of the thinking ability of 21st century demands This development research follows the design of ADDIE (Analysis, Design, Develop, Implementation, and Evaluate). The eligibility criteria refer to Nieveen and Plomp (2013) recommendations, namely validity, practicality, and effectiveness. This article presents the results of (SLM-PC3) validation in terms of consistency (construct validity) and relevance (content validity). The construct validation is assessed based on the development design, which is the indicator of AS, SPS and PSS. Content validity is assessed based on the absence of conceptual errors in the substance of the SLM builder. Data construct validity and content validity are the results of the assessment of three experts in the field of chemical education. Validity indicators are: (SLM-PC3) is declared to meet the construct validity requirements, if each indicator of thinking skills obtains an assessment with a (Mo) mode of at least 4 from the range of scores 1-5. (SLM-PC3) is declared to fulfill the content validity requirements, if no fatal concept errors are found based on the evaluation of the three validators. The results of the three (SLM-PC3) studies developed have met the requirements of consistency and relevance. Keyword: consistency, relevance,ADDIE

Consistency and Relevance of Structured Lecture Materials in Physical Chemistry 3 Subjects