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Learning mathematics is an important lesson studyed from elementary to tertiary levels.One example of an appropriate learning model for learning mathematics is Project Based Learning (PjBL).In searching for information, the author collected 100 articles discussing the effect of implementing the PjBL learning model on mathematics learning from Indonesian jorunal sources such as Google Scholar, Garuda Portal, and Sintaristekbrin.This research uses a meta-analysis design to determine how much effect the application of the PjBL model has on mathematics learning in Indonesia.Of all the articles found, 12 met the inclusion criteria and were analyzed using the Meta-Mar website to obtain a combined effect size.From the interpretation of the combined effect size, implementing the PjBL model strongly influences mathematics learning overall.The studyes' characteristics include educational level, year of research, region, and skills developed.Based on statistics, it was found that applying the PjBL model in mathematics learning is influenced by the level of education, years of research, and skills developed.
Yanti et al. (Tue,) studied this question.