The quality of digital curriculum resources for mathematics in German educational policy

This paper examines the governance and quality control of digital curriculum resources (DCR) for K-12 mathematics education in Germany. It focuses on approval processes and criteria set by the 16 federal states, arguing that these have the potential to influence the development of DCR. Using qualita...

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Published in:ZDM Vol. 57; no. 5; pp. 891 - 904
Main Author: Rezat, Sebastian
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2025
Springer Nature B.V
Subjects:
Artificial intelligence
Connectivity
Content analysis
Criteria
Curricula
Customization
Education
Educational Objectives
Educational Quality
Educational Resources
Expectation
Fundamental Concepts
Individualized Instruction
Influence of Technology
Instructional design
Instructional Materials
International Organizations
Investigations
Learning Activities
Mathematics
Mathematics Education
Mathematics Instruction
Multimedia
Opportunities
Original Paper
Outcomes of Education
Qualitative analysis
Quality control
Quality standards
School Policy
Schools
Socialization
Structural Elements (Construction)
Students
Teaching
Textbooks
Germany
ISSN:1863-9690, 1863-9704
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Abstract This paper examines the governance and quality control of digital curriculum resources (DCR) for K-12 mathematics education in Germany. It focuses on approval processes and criteria set by the 16 federal states, arguing that these have the potential to influence the development of DCR. Using qualitative content analysis, the study explores three research questions: which DCR require official approval, the criteria applied for approval, and the extent to which these criteria are mathematics-specific. Findings indicate that 10 federal states maintain official approval systems, covering digital equivalents of printed textbooks and selected supplemental materials. However, most DCR fall outside these regulated processes, leaving their evaluation largely to individual schools and teachers. The study identifies 17 categories of quality criteria, but reveals a lack of detailed, mathematics-specific requirements. Instead, many criteria are broad references to didactical principles and educational goals, leaving the interpretation and application of these quality standards open-ended. Subject-specific criteria are included but remain limited in specificity. The study underscores the need for research-informed, mathematics-specific quality standards to guide DCR development and approval, emphasizing their importance amidst challenges like artificial intelligence. Policymakers are urged to adopt clearer criteria to ensure high-quality DCR to be used in schools.
AbstractList This paper examines the governance and quality control of digital curriculum resources (DCR) for K-12 mathematics education in Germany. It focuses on approval processes and criteria set by the 16 federal states, arguing that these have the potential to influence the development of DCR. Using qualitative content analysis, the study explores three research questions: which DCR require official approval, the criteria applied for approval, and the extent to which these criteria are mathematics-specific. Findings indicate that 10 federal states maintain official approval systems, covering digital equivalents of printed textbooks and selected supplemental materials. However, most DCR fall outside these regulated processes, leaving their evaluation largely to individual schools and teachers. The study identifies 17 categories of quality criteria, but reveals a lack of detailed, mathematics-specific requirements. Instead, many criteria are broad references to didactical principles and educational goals, leaving the interpretation and application of these quality standards open-ended. Subject-specific criteria are included but remain limited in specificity. The study underscores the need for research-informed, mathematics-specific quality standards to guide DCR development and approval, emphasizing their importance amidst challenges like artificial intelligence. Policymakers are urged to adopt clearer criteria to ensure high-quality DCR to be used in schools.
Author Rezat, Sebastian
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Cites_doi 10.1007/s11858-017-0879-z
10.1007/BF02652785
10.1007/s10648-024-09845-6
10.1007/s11858-021-01266-x
10.1007/978-94-007-0844-0
10.1016/j.stueduc.2018.07.005
10.1007/s11858-017-0860-x
10.26529/cepsj.1285
10.1007/978-3-030-15636-7_8
10.1007/978-3-031-51474-6_24
10.1007/s11858-023-01543-x
10.2791/80171
10.1007/s11858-018-0936-2
10.2307/1167296
10.1007/s11858-021-01309-3
10.1080/10508406.2011.630849
10.1080/10986065.2024.2377423
10.1007/978-3-031-45667-1_51
10.1564/tme_v24.3.01
10.1016/j.learninstruc.2020.101401
10.1016/j.jmathb.2022.101008
10.3167/jemms.2010.020109
10.1007/s13138-021-00190-7
10.1007/978-3-031-45667-1_59
10.1057/978-1-137-53142-1_11
10.1007/978-3-319-43423-0_8
10.1007/978-3-030-95060-6_45-1
10.1007/978-3-030-14610-8_10
10.1007/978-3-031-45667-1_53
10.18404/ijemst.95334
10.1007/s11858-021-01263-0
10.1016/j.stueduc.2005.11.005
10.1007/s10763-016-9782-2
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References S. Korntreff (1708_CR19) 2021
P. Cobb (1708_CR10) 2011; 21
J. Trgalová (1708_CR43) 2023
U. Kuckartz (1708_CR20) 2019
M. Misfeldt (1708_CR24) 2024
1708_CR17
1708_CR39
B. Pepin (1708_CR28) 2017; 49
J. Choppin (1708_CR9) 2014; 2
1708_CR37
B. Pepin (1708_CR27) 2020
1708_CR38
Z. Usiskin (1708_CR44) 2018; 50
Y. H. Carmel (1708_CR7) 2019
E. Naftaliev (1708_CR25) 2017
H. Sievert (1708_CR40) 2021; 53
1708_CR21
B. Koichu (1708_CR18) 2024
M. Repoussi (1708_CR32) 2010; 2
S. Rezat (1708_CR33) 2006; 38
G. Howson (1708_CR16) 1995
F. Reinhold (1708_CR30) 2024
S. Rezat (1708_CR34) 2021; 53
M. Brnic (1708_CR5) 2024; 56
J. Törnroos (1708_CR42) 2005; 31
F. Reinhold (1708_CR31) 2024; 36
J. Confrey (1708_CR12) 2016
E. Naftaliev (1708_CR26) 2022; 68
1708_CR2
C.-C. Fey (1708_CR13) 2018
M. Misfeldt (1708_CR23) 2024
S. Rezat (1708_CR36) 2024
1708_CR3
1708_CR1
1708_CR6
D. K. Cohen (1708_CR11) 1992; 18
G. A. Valverde (1708_CR45) 2002
D. Glasnović Gracin (1708_CR14) 2022; 12
1708_CR22
A.-K. van den Ham (1708_CR46) 2018; 59
S. Rezat (1708_CR35) 2021; 53
A. Strauss (1708_CR41) 1990
B. Pepin (1708_CR29) 2016
C. Bokhove (1708_CR4) 2017; 24
G. Gueudet (1708_CR15) 2018; 16
H. J. Wilkens (1708_CR47) 2011; 4
J. Choppin (1708_CR8) 2017; 49
References_xml – volume-title: Basics of qualitative research: Grounded theory procedures and techniques
  year: 1990
  ident: 1708_CR41
– start-page: 7
  volume-title: Digital curricula in school mathematics
  year: 2016
  ident: 1708_CR12
– volume: 4
  start-page: 63
  issue: 2
  year: 2011
  ident: 1708_CR47
  publication-title: IARTEM e-Journal
– volume: 49
  start-page: 645
  issue: 5
  year: 2017
  ident: 1708_CR28
  publication-title: ZDM - Mathematics Education
  doi: 10.1007/s11858-017-0879-z
– volume: 38
  start-page: 482
  issue: 6
  year: 2006
  ident: 1708_CR33
  publication-title: ZDM - Mathematics Education
  doi: 10.1007/BF02652785
– volume: 36
  issue: 1
  year: 2024
  ident: 1708_CR31
  publication-title: Educational Psychology Review
  doi: 10.1007/s10648-024-09845-6
– volume: 53
  start-page: 1417
  issue: 6
  year: 2021
  ident: 1708_CR40
  publication-title: ZDM - Mathematics Education
  doi: 10.1007/s11858-021-01266-x
– volume-title: According to the book: Using TIMSS to investigate the translation of policy into practice through the world of textbooks
  year: 2002
  ident: 1708_CR45
  doi: 10.1007/978-94-007-0844-0
– ident: 1708_CR21
– volume: 59
  start-page: 133
  year: 2018
  ident: 1708_CR46
  publication-title: Studies in Educational Evaluation
  doi: 10.1016/j.stueduc.2018.07.005
– volume: 49
  start-page: 663
  issue: 5
  year: 2017
  ident: 1708_CR8
  publication-title: ZDM - Mathematics Education
  doi: 10.1007/s11858-017-0860-x
– volume: 12
  start-page: 95
  issue: 2
  year: 2022
  ident: 1708_CR14
  publication-title: CEPS Journal
  doi: 10.26529/cepsj.1285
– start-page: 181
  volume-title: Compendium for early career researchers in mathematics education
  year: 2019
  ident: 1708_CR20
  doi: 10.1007/978-3-030-15636-7_8
– start-page: 601
  volume-title: Fourth international handbook of mathematics education
  year: 2024
  ident: 1708_CR36
  doi: 10.1007/978-3-031-51474-6_24
– start-page: 636
  volume-title: Handbook of international research in mathematics education
  year: 2016
  ident: 1708_CR29
– ident: 1708_CR2
– volume: 56
  start-page: 559
  issue: 4
  year: 2024
  ident: 1708_CR5
  publication-title: ZDM - Mathematics Education
  doi: 10.1007/s11858-023-01543-x
– ident: 1708_CR6
  doi: 10.2791/80171
– volume: 50
  start-page: 849
  issue: 5
  year: 2018
  ident: 1708_CR44
  publication-title: ZDM - Mathematics Education
  doi: 10.1007/s11858-018-0936-2
– volume: 18
  start-page: 3
  year: 1992
  ident: 1708_CR11
  publication-title: Review of Research in Education
  doi: 10.2307/1167296
– volume: 53
  start-page: 1189
  issue: 6
  year: 2021
  ident: 1708_CR35
  publication-title: ZDM - Mathematics Education
  doi: 10.1007/s11858-021-01309-3
– ident: 1708_CR38
– volume: 21
  start-page: 487
  issue: 4
  year: 2011
  ident: 1708_CR10
  publication-title: The Journal of the Learning Sciences
  doi: 10.1080/10508406.2011.630849
– year: 2024
  ident: 1708_CR30
  publication-title: Mathematical Thinking and Learning
  doi: 10.1080/10986065.2024.2377423
– ident: 1708_CR17
– start-page: 1243
  volume-title: Handbook of digital resources in mathematics education
  year: 2024
  ident: 1708_CR24
  doi: 10.1007/978-3-031-45667-1_51
– volume: 24
  start-page: 107
  issue: 3
  year: 2017
  ident: 1708_CR4
  publication-title: The International Journal for Technology in Mathematics Education
  doi: 10.1564/tme_v24.3.01
– volume-title: Mathematics textbooks: A comparative study of grade 8 texts
  year: 1995
  ident: 1708_CR16
– ident: 1708_CR39
  doi: 10.1016/j.learninstruc.2020.101401
– ident: 1708_CR22
– volume: 68
  year: 2022
  ident: 1708_CR26
  publication-title: The Journal of Mathematical Behavior
  doi: 10.1016/j.jmathb.2022.101008
– volume: 2
  start-page: 154
  issue: 1
  year: 2010
  ident: 1708_CR32
  publication-title: Journal of Educational Media, Memory & Society
  doi: 10.3167/jemms.2010.020109
– year: 2021
  ident: 1708_CR19
  publication-title: Journal für Mathematik-Didaktik
  doi: 10.1007/s13138-021-00190-7
– start-page: 1233
  volume-title: Handbook of digital resources in mathematics education
  year: 2024
  ident: 1708_CR23
  doi: 10.1007/978-3-031-45667-1_59
– start-page: 157
  volume-title: The Palgrave handbook of textbook studies
  year: 2018
  ident: 1708_CR13
  doi: 10.1057/978-1-137-53142-1_11
– ident: 1708_CR1
– start-page: 153
  volume-title: Digital technologies in designing mathematics education tasks: Potential and pitfalls
  year: 2017
  ident: 1708_CR25
  doi: 10.1007/978-3-319-43423-0_8
– volume-title: Handbook of digital resources in mathematics education
  year: 2023
  ident: 1708_CR43
  doi: 10.1007/978-3-030-95060-6_45-1
– ident: 1708_CR3
– start-page: 177
  volume-title: Learning in a networked society
  year: 2019
  ident: 1708_CR7
  doi: 10.1007/978-3-030-14610-8_10
– start-page: 1307
  volume-title: Handbook of digital resources in mathematics education
  year: 2024
  ident: 1708_CR18
  doi: 10.1007/978-3-031-45667-1_53
– volume: 2
  start-page: 11
  issue: 1
  year: 2014
  ident: 1708_CR9
  publication-title: International Journal of Education in Mathematics, Science and Technology
  doi: 10.18404/ijemst.95334
– volume: 53
  start-page: 1433
  year: 2021
  ident: 1708_CR34
  publication-title: ZDM - Mathematics Education
  doi: 10.1007/s11858-021-01263-0
– ident: 1708_CR37
– volume: 31
  start-page: 315
  issue: 4
  year: 2005
  ident: 1708_CR42
  publication-title: Studies in Educational Evaluation
  doi: 10.1016/j.stueduc.2005.11.005
– volume: 16
  start-page: 539
  issue: 3
  year: 2018
  ident: 1708_CR15
  publication-title: International Journal of Science and Mathematical Education
  doi: 10.1007/s10763-016-9782-2
– start-page: 19
  volume-title: Proceedings of the Tenth ERME Topic Conference (ETC 10) on Mathematics Education in the Digital Age (MEDA), 16–18 September 2020 in Linz, Austria
  year: 2020
  ident: 1708_CR27
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Snippet This paper examines the governance and quality control of digital curriculum resources (DCR) for K-12 mathematics education in Germany. It focuses on approval...
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SubjectTerms Artificial intelligence
Connectivity
Content analysis
Criteria
Curricula
Customization
Education
Educational Objectives
Educational Quality
Educational Resources
Expectation
Fundamental Concepts
Individualized Instruction
Influence of Technology
Instructional design
Instructional Materials
International Organizations
Investigations
Learning Activities
Mathematics
Mathematics Education
Mathematics Instruction
Multimedia
Opportunities
Original Paper
Outcomes of Education
Qualitative analysis
Quality control
Quality standards
School Policy
Schools
Socialization
Structural Elements (Construction)
Students
Teaching
Textbooks
Title The quality of digital curriculum resources for mathematics in German educational policy
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