Habau Romania recently signed with Transgaz the contract for the construction of the project ‘Natural gas transmission pipeline in the direction of Sighetu Marmatiei – Viseu de Sus – Borsa’ This is an important project for Maramures and is now going in a straight line for its implementation. At the end of the execution, it will be possible to provide natural gas to the localities in the area of interest of the objective, respectively a number of approximately 51,500 household consumers, 500 public institutions (schools, town halls, dispensaries, cultural centres, medical offices, etc.) and approximately 2000 economic agents. Volume 7 - 2022 | https://doi.org/10.3389/feduc.2022.953390 The scoping review represents an important step toward constructing scientific knowledge on a topic in a sustained and integrated manner this article contemplates a scoping review of the resource on project-based learning (PBL) in learning math concepts This research resulted in 17 studies that were reviewed to establish connections between PBL and its potential to promote understanding of math concepts All articles were collected in scientific journals subject to blind review available on open research online The research was organized around three central themes: math Data analysis allowed the building of a model in which the empirical data on PBL in learning math concepts in terms of (i) the learning environment The potential results suggest that PBL engages students in math learning environments PBL must be understood as a learning strategy to develop hard and soft skills related to mathematics There is also evidence that PBL improves the integration of math concepts in a natural context promotes differentiated teaching and enhances the student-centered logic in math education the retained partial results in the analysis showed the feasibility of this scoping review thus providing a basis for developing a scoping review The presented review can work as a guide for other scoping reviews and a model for reflecting on future action on the covered topics coincident or contradictory data and important conclusions for future investigations may emerge As we intend to contribute to the creation in the reader of an overview of the topics covered SR legitimizes the need to identify relationships looking for forms of causal interpretation appropriate to the contextual situation we designed this literature review to delimit the topics to be addressed and increase the degree of understanding of the investigations carried out on these themes placing these themes in a historical and relational perspective This article is structured in five sections: in section “Methods,” we introduce an overview of the SR method used including a description of the options for inclusion/exclusion of documents for analysis the constitution of the documentary corpus and the quality assessment Section “Results” presents our main results then section “Discussion” presents our lessons about the work developed and reflections we conclude in section “Conclusion” with a synthesis and proposals for future work The choice for the theoretical framework was the scoping review proposed by Arksey and O’Malley (2005): the scientific rigor of the document using only the results that are significant for the investigation ensuring accountability in document reviews We used a SR process divided into four stages in which we eliminated some documents according to the following specific criteria: Identify keyword sequences in the databases Exclude repeated articles and articles that do not have an abstract or keyword Exclude articles through analysis of abstracts In our work, we relied on Boland (2013) approach but we implement some adaptations according to these studies we intend to establish connections between PBL and its potential to promote understanding of math concepts we used the following keywords that we considered relevant: learning mathematics The systematic search sequence was built from the combinations made with these keywords The keywords were combined using the Boolean operator “and,” which implies that an article obtained in this search must include the two terms involved in the sequences We selected documents with full text and freely available in scientific journals we filtered all documents whose language was English and we only searched for publications in journals between 2016 and 2022 The end of the various stages of our SR of the literature resulted in 17 documents that were analyzed and constituted our documentary corpus We structured our SR according to the following steps: (i) formulate a research question (iii) define inclusion and exclusion criteria (vi) evaluate the quality of studies through the Critical Appraisal Skills Program (2018) checklist (viii) synthesis of the data and assessment of the quality of the evidence and (ix) dissemination of results through the writing of this article The general concern of this research regards the relationship of PBL (Ralph, 2016) with math learning environments the question that guided this work of scoping review was: Can the PBL pedagogical strategy engage students in mathematics learning environments the study’s objectives were outlined to obtain results Following Gough et al. (2012) guidelines, based on our research question, we defined a research protocol. The research protocol contains a description of how studies are reached, the relevant studies’ judgment regarding their usefulness in addressing the research question, and how the results will be aligned throughout the SR (Monteiro et al., 2016) we chose to include articles with both quantitative and qualitative approaches We considered the following inclusion criteria: articles available on the web at the ACM Digital library and at the Web of Science and Science Direct are included in scientific journals with free access to the full content and are available in PDF format We considered exclusion criteria: being an abstract of articles being in a format other than PDF or not having the full text of the paper available It was mandatory that selected articles had been submitted to peer review procedures All studies that make up the synthesis of this work were located through a solid search of databases considered in the study All articles that did not have keywords were excluded because they were sometimes found by searching for different word sequences Such a stage guaranteed the elimination of duplicates including a column for each article and the material examined organized in EndNote and then in an EXCEL file where we collected and recorded the publication date we excluded repeated articles and articles that did not have keywords or abstracts (773) repeated articles and articles that did not have keywords or abstracts were excluded we excluded articles whose titles or abstracts did not seem to be related to our study’s subject we analyze the quality of all documents not excluded in the previous steps The documents were evaluated through the CASP checklist (2018) a tool used in the methodological quality assessment of scoping reviews It consists of a list with ten questions divided into three sections: (i) are the results of the review valid (ii) what are the results and (iii) will the results help me locally and relevance of the chosen documents for our study by applying these criteria The articles obtained at the end of the fourth stage contributed to our scoping review’s documentary corpus in step 5 from our SR All included articles were evaluated using a checklist (CASP, 2018) based on ten questions that help diagnose the studies’ quality These checklists were designed to be used as educational pedagogic tools and assessment of study results validity; an evaluation of the continuity of the study; an assessment of methodological quality and presentation of results; an assessment of results of the investigation One reviewer assessed each article independently and two more researchers reviewed the results any differences in the score were settled through discussion we present the distribution of the documents collected by the various stages of exclusion and inclusion: One of the interesting results of this SR is the amount of work developed in Indonesia which looks pretty enthusiastic about the PBL methodological approach applied to mathematics concepts Most of the studies support their research on empirical data with many quantitative studies and practical training on the subject The method used in an investigation describes the way in which all the methodological procedures of the investigation were conducted (Thomas and Harden, 2008). Analyzing the articles and grouping them according to the methodological research strategies adopted: exploratory, descriptive and experimental. The years 2021–2022 had more evidence of the number of publications of quantitative studies (Graph 1) Number of publications per year according to the methodological research strategies Table 2 organizes the descriptive data of the articles analyzed, providing information about the title and study’s objective. The results presented corroborate the notion that the pedagogical methodology of project learning promotes learning in different domains, particularly in mathematics and at the most varied ages. Learning by the project is a topic already addressed in most continents (Graph 2) The highest incidence of publications is found in America—United States Costa Rica and Canada between 2018 and 2019 There is also a significant incidence in Oceania—Indonesia between 2020 and 2021 carried out a learning experience based on PBL students face authentic and motivating problems requiring them to answer complex questions and develop success skills The results of these authors show that students were highly motivated and capable of identifying which skills they needed improvement Their students attended six lessons of project-based geometry learning assisted with GeoGebra augmented reality This study suggested that the secondary school students well accepted GeoGebra augmented reality On the other hand, the student’s attitude toward using Augmented Reality has no direct effect on behavior intention. Therefore, Kholid et al. (2022) conducted investigations regarding geometry courses at this level and determined the average scores of some geometry courses in the last 5 years The results obtained by these researchers show the potential of the PBL model and GeoGebra by analytical geometry courses These models help prospective mathematics teachers gain an understanding of analytical geometry This research method used by these authors was the pre-experimental pretest-posttest one group design This study showed that with the implementation of projects in the STEM area students’ problem-solving ability increased significantly PBL environment use a digital portfolio to present their work The results achieved by these authors show that students primarily use either video/audio recording or text-based captions or labels to describe and explain their work video/audio recording also reflects conceptual understanding or emotional feelings related to their projects The PBL activities based on the STEM approach with distancing learning strategies could significantly improve students’ problems solving abilities (Sarwi et al., 2021). In their study, He et al. (2021) explores the relationship between STEM education and the development of children’s mathematics ability These authors involved kindergarten students and their results indicate STEM education promotes significant spatial ability improvement in children aged 5–6 the mathematics education instructors using a mixed instruction course incorporating an initial phase of transmission and transactional teaching practices by a step of problem-based learning instruction Their results suggest significant changes in preservice teacher beliefs and orientations the teacher becomes the facilitator of student action screening information and references who may also contribute to the foundation of knowledge The student takes an active role in their deal training Framework on regarding mathematical skills in teaching through a PBL This SR shows not only a few articles about PBL in learning math concepts but also confirms several options and techniques for enhancing mathematical thinking abilities through PBL we found connections between PBL and its potential to promote understanding of math concepts We realize that the PBL method in mathematics education enhanced students’ team involvement and learning capacity some difficulties were discovered in developing non-traditional skills and monitoring through assessment processes we realized that PBL seems to have the potential to promote understanding of math concepts Further research is needed to study the pedagogical relevance of this Scoping reviews are subject to bias in articles selection and data extraction due to our choice of inclusion and exclusion criteria and databases we established a protocol for this review that allows us to respond to a specific research question and FV contributed to the conception and design of the study and wrote sections of the manuscript SC organized the database and wrote the first draft of the manuscript SC and FV performed the statistical analysis All authors contributed to manuscript revision 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