The conception of functions, defined as the relationship between magnitudes or sets of ordered pairs, varies among students depending on the contextualization of the concept within the curriculum, notably in school textbooks. This investigation endeavors to scrutinize the approach taken by Indonesian textbooks in introducing the function concept…

The properness of concepts, principles, and biological contents of natural science textbooks is essential. The aim of this research was to compare the biology content of natural science textbooks for VIII graders in second semester. The indicators used to determine the properness were the accuracy of Core Competence/CC and Basic Competence/BC,…