Author Guidelines

International Journal of Didactic Mathematics in Distance Education (IJDMDE) Published by Universitas Terbuka (Open University), Indonesia, in collaboration with Indonesia Mathematics Educator Society (I-MES)

Overview
Authors are requested to read these guidelines carefully and in full before preparing and submitting a manuscript. Manuscripts that do not conform to these guidelines will be returned to the authors at the desk screening stage without entering peer review. All submissions must be made exclusively through the journal's Open Journal Systems (OJS) platform at https://jurnal.ut.ac.id/index.php/ijdmde.

1. General Requirements
All manuscripts submitted to IJDMDE must satisfy the following minimum requirements:

Requirement	Specification
Language	Written entirely in clear, proficient academic English. Manuscripts with significant language deficiencies will be returned at desk screening. Authors are strongly encouraged to have their manuscript reviewed by a qualified English language editor or proofreader prior to submission.
Article length	Minimum 9 pages; maximum 20 pages, inclusive of all sections, figures, tables, and references. Manuscripts exceeding 20 pages require prior written approval from the Editor-in-Chief.
Abstract	200–250 words in English. No citations permitted in the abstract.
Keywords	3–5 keywords in English, listed below the abstract.
Citation style	In-text citations and reference list formatted strictly according to APA 7th Edition (American Psychological Association).
Reference management	Use of a reference management tool — Zotero, Mendeley, or EndNote — is required for formatting and consistency.
Manuscript template	All manuscripts must be prepared using the official IJDMDE manuscript template without modification to the template's margins, fonts, or layout.
Originality	Manuscripts must be original, unpublished, and not currently under review at any other journal or outlet.
Ethics statement	Studies involving human participants, sensitive data, or ethical considerations must include an ethics approval statement in the Methods section.
ORCID iD	All authors are required to include their ORCID iD in the manuscript submission. Authors without an ORCID iD must register at https://orcid.org prior to submission.
AI Use Disclosure	Authors must include an AI Use Disclosure statement in accordance with the journal's Generative AI Policy, regardless of whether AI tools were used.
Conflict of interest	Authors must declare any financial or non-financial conflict of interest, or explicitly state that no conflict of interest exists.

2. Manuscript Structure
All manuscripts must follow the section structure below in the order presented. Each section must be clearly labelled as a heading in the manuscript.
2.1 Title
The title must clearly describe the research topic, method or model employed, and the study objective. The title must not contain acronyms, abbreviations, or undefined technical terms. Titles should be informative and specific enough to support accurate indexing and discoverability. Recommended length: 12–20 words.
2.2 Authors and Affiliations
List all authors in the order in which they should appear in the publication. For each author, provide:

Full name (no academic titles or degrees).
Full institutional affiliation (department, faculty, institution, city, country).
Email address of the corresponding author.
ORCID iD for all authors (mandatory).

The corresponding author must be clearly identified with an asterisk (*) and their email address must be provided.

2.3 Abstract
The abstract must be written in English, contain 200–250 words, and include no citations. The abstract must be structured to address the following elements in sequence:

Background and problem: A brief statement of the research problem and its significance.
Objective: The specific aim or research question addressed by the study.
Method: A concise statement of the research design and approach.
Results: A summary of the principal findings.
Conclusion: A brief statement of the significance or implications of the findings.

The abstract must be self-contained and intelligible without reference to the main text.

2.4 Keywords
Provide 3–5 keywords in English, listed below the abstract in alphabetical order, separated by semicolons. Keywords must be specific and reflect the core topics of the manuscript to support accurate indexing by Scopus, DOAJ, and Google Scholar. Avoid overly general terms (e.g., "mathematics", "education") and instead use precise descriptors (e.g., "didactical design research", "distance learning", "flipped classroom").
2.5 Introduction
The Introduction must establish the context and significance of the research. It must address the following in sequence:

The broader field of research and its importance.
A critical review of relevant prior research, identifying the research gap (GAP analysis) — the specific problem, limitation, or unanswered question that the current study addresses.
A clear distinction between the current study and previous work.
A concise and explicit statement of the research objective(s) or research question(s) at the end of the section.

The Introduction must not contain findings, results, or conclusions.
2.6 Method
The Method section must provide sufficient detail to allow the study to be independently replicated. It must address the following components:

Research design: The type of study (e.g., qualitative, quantitative, mixed methods, design-based research, experimental).
Participants / subjects / sample: A description of the study population, sampling method, sample size, and relevant demographic or contextual characteristics.
Data collection: The instruments, tools, procedures, and timeline used to collect data.
Data analysis: The analytical approach, including statistical methods (for quantitative studies) or coding and interpretation procedures (for qualitative studies).
Ethical considerations: Where applicable, a statement of ethics approval, informed consent procedures, and participant confidentiality measures.

Authors must not present results in the Method section.

2.7 Results and Discussion
This section may be presented as a combined Results and Discussion section or as two separate sections, at the authors' discretion.

Results must:

Present findings clearly and concisely, using tables, figures, or descriptive summaries as appropriate.
Summarise scientific findings rather than reproducing raw data in full.
Be presented in a logical sequence aligned with the research objectives stated in the Introduction.

Discussion must:

Interpret the significance of the findings — not merely restate them.
Address how the results relate to the original research objectives (what).
Provide a scientific interpretation of each key finding (why).
Compare and contrast the findings with those of previous studies identified in the literature, explaining consistencies and discrepancies (what else).
Avoid extensive re-citation of background literature already covered in the Introduction.

The Discussion is the most critical section of the manuscript in terms of demonstrating scholarly contribution. Authors are expected to articulate clearly the significance, novelty, and implications of their findings.

2.8 Conclusion
The Conclusion must directly and explicitly answer the research objectives stated in the Introduction. It must:

State what the study has established or contributed to the field.
Articulate how the findings advance current knowledge beyond the existing state of the field.
Indicate practical implications and potential applications of the findings where relevant.
Suggest directions for future research or identify studies currently underway.

The Conclusion must not simply repeat the abstract, restate the results numerically, or list findings without interpretation. Conclusions that merely summarise the Results section without addressing the research objectives will be considered insufficient for publication.

2.9 AI Use Disclosure
All manuscripts must include an AI Use Disclosure statement in a dedicated section between the Conclusion and the References, in accordance with the journal's Generative AI Policy.

If AI tools were used:

"During the preparation of this manuscript, the authors used [name of AI tool, version, developer] for [specific purpose]. All AI-assisted content was reviewed, revised, and verified by the authors. The authors take full responsibility for the integrity of the published content."

If no AI tools were used:

"The authors declare that no Generative AI tools were used at any stage in the preparation of this manuscript."

2.10 Data Availability Statement
A Data Availability Statement is mandatory for all manuscripts. This statement must be placed after the AI Use Disclosure and before the References. Authors must indicate one of the following:

The data supporting this study are openly available at [repository name and DOI/URL].
The data are available upon reasonable request to the corresponding author.
The study did not generate datasets requiring separate archiving.
Data sharing is not applicable due to ethical restrictions [brief explanation required].

2.11 Conflict of Interest Statement
All manuscripts must include an explicit Conflict of Interest statement. If no conflict exists, authors must state: "The authors declare no conflict of interest."
2.12 Author Contribution Statement
Authors must describe each author's individual contribution using the CRediT (Contributor Roles Taxonomy) framework. Example: "Author A: Conceptualisation, Methodology, Writing – Original Draft. Author B: Data Curation, Formal Analysis. Author C: Writing – Review & Editing, Supervision."
2.13 Acknowledgements (if applicable)
Funding sources, institutional support, and any other acknowledgements must be stated in this section. Grant numbers and funding body names must be specified in full.
2.14 References
The reference list must conform to the following requirements:

A minimum of 25 references is required.
A minimum of 85% of references must be sourced from reputable, peer-reviewed journal articles.
All references must include a verifiable DOI formatted as a resolvable hyperlink (https://doi.org/[DOI]).
References must be formatted strictly according to APA 7th Edition.
References must be current: a minimum of 60% of references should have been published within the last 10 years.
Self-citation should not exceed 10% of the total reference list.
All in-text citations must appear in the reference list; all references in the reference list must be cited in the text.

3. Figures, Tables, and Supplementary Materials
3.1 Figures

All figures must be submitted in high resolution (minimum 300 dpi for photographs; minimum 600 dpi for line drawings).
Figures must be numbered consecutively (Figure 1, Figure 2, etc.) and accompanied by a descriptive caption placed below the figure.
Figure captions must be self-explanatory and not require reference to the main text.
If a figure has been reproduced or adapted from a previously published source, the original source must be cited in the caption and copyright permission must have been obtained.

3.2 Tables

Tables must be numbered consecutively (Table 1, Table 2, etc.) with a descriptive title placed above the table.
Tables must be formatted using the journal template's table style and must not be submitted as images.
Large tables that are not essential to the main narrative may be submitted as supplementary materials.

3.3 Supplementary Materials
Supplementary materials (raw data, research instruments, code, extended tables) may be submitted alongside the manuscript. All supplementary files must be referenced in the main text and assigned a persistent identifier (DOI or repository URL) where possible, in accordance with the journal's Data Availability Policy.

4. Formatting Specifications

Element	Specification
Font	Bahnschrift Light, 11pt for body text
Line spacing	Single space (1.0)
Page size	A4
Margins	As specified in the IJDMDE manuscript template
Section headings	Bold, as defined in the template
Article length	Minimum 9 pages; maximum 20 pages (inclusive of all content)
Equation numbering	Equations must be numbered consecutively in parentheses, right-aligned
Unit of measurement	SI units are preferred throughout

5. Submission Checklist

Before submitting, authors must confirm that all of the following have been completed:

6. Plagiarism and Originality
All manuscripts are screened using Turnitin prior to peer review. The similarity thresholds are:

Similarity Index	Action
Below 20%	Acceptable; manuscript proceeds to peer review.
20% – 45%	Returned for revision; resubmit with new Turnitin report confirming similarity below 15%.
Above 45%	Immediately rejected. Resubmission of the same manuscript will not be accepted.

Authors are encouraged to submit their Turnitin report together with their manuscript at the time of submission to expedite the desk screening process.

7. English Language Standard
Manuscripts must be written in clear, proficient academic English. Authors whose first language is not English are strongly advised to have their manuscript professionally edited by a qualified English language editor before submission. A proofreading certificate or statement from the editor may be included as a supplementary file to expedite desk screening.
Manuscripts with persistent language deficiencies that impede scholarly comprehension will be returned at desk screening, irrespective of their scientific merit.

8. Contact
For questions regarding manuscript preparation or submission, please contact the Editorial Office:

Email: ijdmdl@ecampus.ut.ac.id / ijdmdempmt@gmail.com
OJS Submission Portal: https://jurnal.ut.ac.id/index.php/ijdmde
Subject line for enquiries: AUTHOR GUIDELINES ENQUIRY — [Your Name / Manuscript Title]

Issued by: Editorial Board, International Journal of Didactic Mathematics in Distance Education (IJDMDE) Published by Universitas Terbuka, Indonesia, in collaboration with Indonesia Mathematics Educator Society (I-MES) Guidelines Edition: 2025 | Next Review: 2026

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