About the Journal

Focus and Scope

Peer Review Process

This journal accepts articles with at least one of the authors with a doctoral degree.

The manuscripts submitted initially will undergo an electronic analysis using CopySpider anti-plagiarism software for possible identification of plagiarism.

Manuscripts submitted to Tangram are evaluated by the Editors (desk review) regarding adherence to the scope of the journal and compliance with the rules established in the Guidelines for Authors.

After approval in the desk review, the manuscript is submitted to blind peer review, sent to at least two ad hoc expert reviewers, who will assess the scientific quality of the work and answer the following questions:

• Does the job comply with APA standards?
• Is the topic addressed relevant to Mathematics Education?
• Is the submitted work well organized and structured in relation to the research objectives and problems?
• Is the submitted work well organized and structured in relation to the appropriate language for readers?
• Is the submitted work well organized and structured in relation to the research methodology?
• Is the theoretical framework used consistent with the work proposal?
• Is there cohesion between the introduction, the objectives, the methodology, and the results of the work?
• As for the aspects observed in writing?
• What is your final opinion?

The reviewers will make the recommendation "Accept", "Required revisions", "Submit a new round" or "Reject" the manuscript.

If the reviewers do not provide consistent answers, the editors will make a decision based on the opinions issued or send the article to a third reviewer.

After reviewing the opinions, the editors will decide whether the manuscript should be accepted, revised, submitted to a new round of evaluations or rejected.

The editors' decision is final and will be informed by email.

Annually, in the last issue of the year, Tangram publishes the nominate of reviewers who contributed to the peer review process.

Publication Frequency

Quarterly

Open Access Policy

This journal offers immediate free access to its content, following the principle that making scientific knowledge freely available to the public provides greater worldwide democratization of knowledge.

Tangram is an Open Access journal. All of its content is freely available at no cost to the user or his institution.

Users can read, download, copy, distribute, print, search or link to the full texts of the articles in this journal without requesting prior permission from the editor or the author. This journal is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Brazil license. For more details, access Tangram's Copyright Statement.

Processing and Publication Fees

This journal does not charge APCs or submission charges.

Submission, processing and publication are free.

Publication Ethics Guidelines

Tangram ethics guidelines aims at contributing to the journal scientific quality, assuring its credibility to editors, authors and readers. This guidelines is based on the core practices of the Committee on Publication Ethics (COPE), on the guidelines provided by the Council of Science Editors (CSE) to promote scientific journals integrity, and on the usual scientific practices for publications in the in the field of Education.

Tangram adopts the definition of research misconduct provided by the National Science Foundation (NSF). The term is defined as “fabrication, falsification, or plagiarism in proposing or performing research”. NSF also specifies fabrication as “making up data or results and recording or reporting them”; falsification as “manipulating research materials, equipment, or processes, or changing or omitting data or results” in such a way the “research is not accurately represented”; and plagiarism as the “appropriation of another person’s ideas, processes, results or words without giving appropriate credit” (NSF, 2012, p. 237).

Therefore, plagiarism, falsification and fabrication are considered research misconduct by Tangram, and shall not be permitted. Authors must guarantee that all data presented on the submitted manuscripts are real and authentic.

Authorship and Contribution

• Authors must ensure that the submitted manuscripts and their content are original and that they were not submitted to another journal.
• Authors of a submitted manuscript must have contributed to the research development. The insertion of new authors after the manuscript acceptance shall not be permitted.
• The content and opinions expressed in the publication are those of the authors alone. It is the responsibility of the corresponding author to ensure that all authors are in agreement and to keep them informed about the whole process of submission.
• Authors must cite and organize the references that formed the theoretical and practical basis of their researches according to the Authors Guidelines. Moreover, they shall provide information, if applicable, about the research funding sources writing an acknowledgment at the end of the paper or at a footnote in its beginning.

Complaints and Appeals

• When submitting a manuscript, authors agree on publishing it on the journal.
• Authors will be informed about the acceptance of the paper before the beginning of Tangram editing/designing process, and shall express their desire of withdrawing the paper in case they need. After being editing, the withdrawal of papers will only be accepted at justifiable request, which shall be sent to the journal by e-mail and analyzed by the Editorial Board.
• In case of suspected plagiarism, the journal’s editor shall contact the author for explanations. The deadline set by the editor must be respected. The author’s response shall be analyzed by the Editorial Board, who shall decide whether the manuscript must move forward, be altered by its authors or be rejected.

Conflicts of interest/Competing Interests

• The journal’s editor must not have conflicts of interest regarding the manuscripts he/she accepts or rejects. In case of conflict of interest, the editor shall request the analysis and decision of an Editorial Board’s member who must not be involved in the conflict.
• Reviewers shall report personal, professional, intellectual, financial, political or religious conflicts of interest to Tangram editorial team.
• Considering the peer review process, reviewers must inform the editor in case the author’s identity is known by them.

Data sharing and Reproducibility

• Tangram is an Open Access journal. All of its content is available at no cost to users or institutions.
• Users can read, download, copy, distribute, print, search or link the full texts of the articles  published by this journal without asking for prior permission from the editor or authors.
• Authors must declare their authorship of the submitted manuscripts and the legitimate use of any third-party materials, citing them appropriately.
• All content presented in the articles published by the journal is the sole responsibility of the authors, and the reproduction of such content is allowed, provided the source is cited.

Ethical Oversight

• Authors must ensure that the research, when appropriate, has been approved by the relevant entity (for example, the Research Ethics Committee).
• The Tangram Editorial Board is responsible for monitoring the compliance with these publication ethics guidelines. In addition, the board should always consider the changes in scientific publication standards in the field of educational area when making its decisions.

Intellectual Property

• The authors authorize the publication of their articles in the journal.
• The authors ensure that the contribution is original, unpublished and is not being evaluated by any other journal.
• The journal is not responsible for the opinions, ideas and concepts expressed in the texts, since they are the sole responsibility of the authors.
• The authors own the copyright of their articles and grant the journal the right of first publication, being the paper simultaneously licensed under a CC BY-NC-SA 3.0 BR License, which allows others to share the article with the acknowledgement of its authorship and initial publication in this journal.
• The authors are able to make separate and, additional contractual arrangements for the non-exclusive distribution of the article published by the journal (e.g., post it on an institutional repository or publish it in a book), since an acknowledgement of its previous publication is provided.
• The authors are permitted and encouraged to post their work online (e.g., on institutional repositories or on their website) only after its publication.

Peer Review Processes

• Reviewers must refuse to review papers whose themes they do not feel qualified to assess.
• Reviewers shall only agree to assess a manuscript if they have knowledge of the topic to carry out an adequate review and are available to meet the deadlines.
• Reviewers must not use or divert the knowledge acquired during the review process.
• The manuscripts must be treated confidentially. The reviewers must respect the confidentiality of the peer review process and must not disclose any details of the manuscript or its review, during or after the evaluation process.
• Remarks made by reviewers should be objective and constructive, avoiding hostility and personally defamatory or disparaging comments.
• The reviewers must indicate the flaws that can be corrected and, what must be done for this purpose. They can also suggest relevant references for studies that were not cited, when scientifically relevant to the article and/or its reformulation.
• Reviewers must indicate the possible changes in the first revision of the manuscript, avoiding new recommendations when the reworked file is returned.
• Authors might be invited to be reviewers for Tangram. If the authors are able to perform this role, they must do so with dedication, promptness and scientific seriousness, contributing to the improvement of the manuscript.
• Tangram reviewers must adopt COPE ethics guidelines for peer reviewers.

Editorial Practices

Tangram editorial practices are those described by the Committee on Publications Ethics (COPE), in its Guidance for Editors: research, audits and service evaluations.

Post-publication Discussions and Corrections

Tangram recognizes the importance of post-publication commentaries on published researches as necessary to the scientific discourse improvement.

Complaints or disagreements about interpretation and other issues should be sent to the journal's editor-in-chief by e-mail (edvonetealencar@ufgd.edu.br). Readers and/or authors who have identified inconsistencies shall clearly inform the publication reference, including title, author and section of the article, and briefly make their remarks.

Tangram adopts the following policy for making corrections to the print and online versions of their peer-reviewed content.

• Editor Correction. Notification of an important error made by Tangram that affects the publication record or the scientific integrity of the paper, or the reputation of the authors or of the journal.
• Author Correction. Notification of an important error made by the author(s) that affects the publication record or the scientific integrity of the paper, or of the reputation of the authors or the journal.
• Retraction. Notification of invalid results that affect the reliability of a previously published article. The original article is marked as retracted but remains available to readers, and the retraction statement notifying readers of the invalidity of the published paper is bi-directionally linked to the original published paper.
• Editor's Note. An editor's note is a statement from editors notifying readers of issues related to the published paper. It is an online update made only on the registration page of the published article.

The decisions about types of correction are dicussed with the Editorial Board, but the editor-in-chief makes the final decision about the category in which the amendment is published.

Indexers

Access the indexers here.

Journal History

Tangram is a journal that aims to contribute to the dissemination of unpublished articles from research, as well as in-depth theoretical studies, scientific initiation works sent with the doctor advisor and reflections on pedagogical experiences in Basic Education and Higher Education.

Priority is given to the acceptance of articles in the area of Mathematics Education, as well as those that relate to other areas. Articles can be sent in Portuguese, Spanish or English.