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Stereotypes and abnormal behaviour (SAB) exhibited by long-tailed macaques (LTMs) have attracted the attention of behavioural study, although caused by many factors. Mostly found in captivity, it can also occur in the natural environment. This study aims to review several scientific articles on SAB in LTMs, as well as for environmental enrichment conditions. This study used a web-based survey to collect all scientific publications related to SAB in LTMs with a statistical correlation test to determine the cost of individuals' needs as an animal model for the research and the regression test to determine the effects of the number of individuals observed, as well as SAB types in LTMs. This study used two variables: the number of individuals and SAB types and sorted by rank. The statistical correlation result shows that the cost of individuals' needs as an animal model for the research and publication's year is positive correlate. The regression test result shows that the total number of individuals observed is significantly different (p-value<0.05, one-tailed) between SAB types. The primary goal of stimulating environmental enrichment is to give pleasant options for animals based on the treatment object in the study supplied while emphasising animal welfare and promoting research effectiveness.

This research aims to produce learning media for the Ethnomathematics Student Worksheet on Traditional Market Snacks in Pontianak City on the flat-sided building material that reaches the level of validity, practicality, and effectiveness. This study uses a 4D design model, which is modified into 3D, namely define (definition), design (design), development (development), without using the fourth stage, namely disseminate, because this refers to the initial goal of this research is to develop valid, practical and effective media contained in the third step of the development of this model, namely development. The subjects in this study were students of class VIII SMP Suster Pontianak with a total of 20 students. The instruments used in this study were validation sheets, questionnaires, and test questions. Based on the results of the first study, the validation of the Ethnomathematics Student Worksheet with an average value of 84,76% from expert activities was very valid with a very good category. The second is the value of practicality, seen from the value of the questionnaire filled in by the teacher, the percentage is 97% with very practical criteria. to see the effectiveness of the ethnomathematics-based student worksheet learning media compared to the Likert scale index, with a percentage of 81.11% in the very effective criteria.