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International cooperation

  • Since 2012 Senior Research Associate at the University of Johannesburg (South Africa)
  • Cooperation with the Centre for Education Practice Research

Current projects

MARKO-DO (South Africa): Standardization of mathematical competence level tests for pre-schools in South Africa

This mathematical testing method is based on the developmental model of mathematical competences according to Fritz and Ricken. MARKO-DO is currently being standardized in partnership with the University of Johannesburg in South Africa in 4 national languages (isiZulu, Sesotho, Afrikaans, English).

  • Target group: grade-R and grade 1
  • Project partners: Annemarie Fritz Stratmann (University of Duisburg-Essen), Antje Ehlert (University of Potsdam), Elizabeth Henning and  others (University of Johannesburg, South Africa), Lars Balzer (Swiss Federal Institute for Vocational Education and Training (SFIVET))
  • Funding: South Africa

Joint Symposia

EARLI (16th Biennial Conference of the European Association for Research in Learning and Instruction) in Limassol (Cyprus), symposium led by Pirjo Aunio (Finnland), discussant: Annemie Desoete (Belgien)

  • Ehlert, A. & Fritz, A. (2015). The arithmetic concept understanding in extended number ranges at the end of grade 1. Presentation in symposium

CEA (Conference on Educational Assessment) in Szeged (Hungary), symposium led by Annemarie Fritz (Germany), discussant: Benõ Csapó (Hungary)

  • Fritz, A., Ehlert, A. & Balzer, L. (2015). Intercultural validation of a mathematics  competence test for grade 1 children. Presentation in symposium
  • Ehlert, A. & Fritz, A. (2015). Validation of a grade 1 mathematic comptence test for learning disabled children. Presentation in symposium
  • Balt, M., Ehlert, A., & Fritz-Stratmann, A. (2015). Early detection of mathematical learning difficulties in the context of school entry tests in German primary schools, Presentation in symposium   
  • Herzog, M., Fritz, A. & Ehlert, A. (2015). A developement model of place-value and the base -10 system. Posterpresentation

EARLI-Sig, Jyväskylä (Finland), joint symposia with the University of Johannesburg, discussant: Pirjo Aunio (Finland)

  • Ehlert, A. & Fritz, A. (2014). How do children acquire mathematical concepts? An empirical evidence of a developmental model.

International Conference on Inclusive Education, Wuppertal

  • Ehlert, A. & Fritz, A. (2014). The ability to describe the mathematical concept-development as a prerequisite for inclusive settings – Diagnostic tests.
  • Fritz, A., Ehlert, A. & Balzer, L. (2014). A Developmental Stage Model for Arithmetical Development in age 4  to 8.

SARAECE - South African Research Association for Early Childhood Education International Conference, Port Elizabeth (South Africa)

  • Ehlert, A., Fritz, A., Langhorst, P. & Balzer, L. (2014). Diagnostic test procedures of a mathematics competence assessment tool for children in the early years of primary school. Presentation
  • Fritz, A. & Ehlert, A. (2014). A Developmental Stage Model for Arithmetical Development in age 4 to 8.

EARLI (15th Biennial Conference of the European Association for Research in Learning and Instruction) in Munich, joint symposium with the University of Johannesburg, discussant: Detlev Leutner

  • Ehlert, A. & Fritz, A. (2013). Development of mathematical concepts in a longitudinal study – Validation of a developmental model of mathematical concepts. Presentation in symposium
  • Fritz, A., Ehlert, A. & Balzer, L. (2013). A developmental stage model for arithmetical development in age four to eight. Presentation in symposium
  • Balzer, L., Ehlert, A., Ragpot, L., Henning, E. & Fritz, A. (2013). Empirical insights into MARKO-D in Germany and South Africa. Presentation in symposium

CEA (10th Conference on Educational Assessment) in Szeged (Hungary), Symposium led by Annemarie Fritz -Stratmann

  • Ehlert, A., Fritz, A., Ricken, G. & Balzer, L. (2012). MARKO-D 0 and 1. Diagnostic tests based on developmental model. Presentation in symposium.
  • Langhorst, P, Ehlert, A. & Fritz, A. (2012). Mina and the mole. A math training for early mathematics instruction. Presentation in symposium.