Erich Ch. Wittmann finished his studies of mathematics and physics at the University of Erlangen from 1959 to 1964 and his practical training as a teacher for the gymnasium in 1966 with the Bavarian State Examination and the PhD in mathematics in 1967. After three years in mathematical research at the Dept. of Mathematics/Erlangen he was appointed full professor of mathematics education at the University of Dortmund.  In 1987 he was co-founder of the developmental research project Mathe 2000. His international reputation has been acknowledged by the invitation to a plenary lecture at ICME 9.

“Both teachers I interviewed were particularly interested in the examples of teaching units proposed in the book. These teachers’ reactions further confirm the validity of Wittmann’s vision of mathematics education as a design science. … I read their words as a wish to base their educational commitment … . This appears to me the main message of the book and a sensible output of the searching for common ground for mathematics and mathematics education … .” (Fulvia Furinghetti, Educational Studies in Mathematics, Vol. 111 (2), 2022)

• Preface.- Introduction.- 1. Teaching Units as the Integrating Core of Mathematics Education. Educational Studies in   Mathematics 15 (1984), 25–36.- 2. Clinical Interviews Embedded in the „Philosophy of Teaching Units“ – A Means of Developing Teachers’ Attitudes and Skills. In: Christiansen, B. (ed.), Systematic Cooperation Between Theory and Practice in Mathematics Education, Mini-Conference at ICME 5 Adelaide 1984, Copenhagen: Royal Danish School of Education, Dept. of Mathematics 1985, 18–31 .- 3. The mathematical training of teachers from the point of view of education. Survey Lecture at ICME 6. Journal für Mathematik-Didaktik 10 (1989), 291–308.- 4. Mathematics Education as a ‘Design Science’. Educational Studies in Mathematics 29 (1995), 355–374 .- 5. Standard Number Representations in Teaching Arithmetic. Journal für Mathematik-Didaktik 19 (1998), No. 2/3, 149 – 178.- 6. Designing Teaching: The Pythagorean Theorem. In: Cooney, Th. P. (ed.), Mathematics, Pedagogy, and Secondary Teacher Education. Portsmouth, NH: Heineman 1996, 97–165.- 7. Developing mathematics education in a systemic process. Plenary Lecture at ICME 9.     Educational Studies in Mathematics 48 (2002), 1–20.- 8. The Alpha and Omega of Teacher Education: Stimulating Mathematical Activities. In:      Holton, D., Teaching and Learning at University Level. An ICMI Study. Dordrecht: Kluwer Academic Publishers, 2002, 539 – 552.- 9. Collective Teaching Experiments: Organizing a Systemic Cooperation Between Reflective Researchers and Reflective Teachers in Mathematics Education. In: Nührenbörger, M. et al. (2016). Design Science and Its Importance in the German Mathematics Educational Discussion. (p. 26-34) Rotterdam: Springer .- 10. Operative Proofs in Schoolmathematics and Elementary Mathematics mathematica didactica 37, H. 2 (2014), 213 – 232) (transl. from German).- 11. Structure genetic didactical analyses - empirical research „of the first kind". In:   Błaszczyk, P. & Pieronkiewicz, B. (eds.): Mathematical Transgressions 2015. Kraków: Universitas 2018, 133 – 150.- 12. Understanding and Organizing Mathematics Education as a Design Science – Origins and New Developments. Hiroshima Journal of Mathematics Education vol. 12 (2019), 1– 20.

Erich Ch. Wittmann finished his studies of mathematics and physics at the University of Erlangen from 1959 to 1964 and his practical training as a teacher for the gymnasium in 1966 with the Bavarian State Examination and the PhD in mathematics in 1967. After three years in mathematical research at the Dept. of Mathematics/Erlangen he was appointed full professor of mathematics education at the University of Dortmund.  In 1987 he was co-founder of the developmental research project Mathe 2000. His international reputation has been acknowledged by the invitation to a plenary lecture at ICME 9.

“Both teachers I interviewed were particularly interested in the examples of teaching units proposed in the book. These teachers’ reactions further confirm the validity of Wittmann’s vision of mathematics education as a design science. … I read their words as a wish to base their educational commitment … . This appears to me the main message of the book and a sensible output of the searching for common ground for mathematics and mathematics education … .” (Fulvia Furinghetti, Educational Studies in Mathematics, Vol. 111 (2), 2022)

• Preface.- Introduction.- 1. Teaching Units as the Integrating Core of Mathematics Education. Educational Studies in   Mathematics 15 (1984), 25–36.- 2. Clinical Interviews Embedded in the „Philosophy of Teaching Units“ – A Means of Developing Teachers’ Attitudes and Skills. In: Christiansen, B. (ed.), Systematic Cooperation Between Theory and Practice in Mathematics Education, Mini-Conference at ICME 5 Adelaide 1984, Copenhagen: Royal Danish School of Education, Dept. of Mathematics 1985, 18–31 .- 3. The mathematical training of teachers from the point of view of education. Survey Lecture at ICME 6. Journal für Mathematik-Didaktik 10 (1989), 291–308.- 4. Mathematics Education as a ‘Design Science’. Educational Studies in Mathematics 29 (1995), 355–374 .- 5. Standard Number Representations in Teaching Arithmetic. Journal für Mathematik-Didaktik 19 (1998), No. 2/3, 149 – 178.- 6. Designing Teaching: The Pythagorean Theorem. In: Cooney, Th. P. (ed.), Mathematics, Pedagogy, and Secondary Teacher Education. Portsmouth, NH: Heineman 1996, 97–165.- 7. Developing mathematics education in a systemic process. Plenary Lecture at ICME 9.     Educational Studies in Mathematics 48 (2002), 1–20.- 8. The Alpha and Omega of Teacher Education: Stimulating Mathematical Activities. In:      Holton, D., Teaching and Learning at University Level. An ICMI Study. Dordrecht: Kluwer Academic Publishers, 2002, 539 – 552.- 9. Collective Teaching Experiments: Organizing a Systemic Cooperation Between Reflective Researchers and Reflective Teachers in Mathematics Education. In: Nührenbörger, M. et al. (2016). Design Science and Its Importance in the German Mathematics Educational Discussion. (p. 26-34) Rotterdam: Springer .- 10. Operative Proofs in Schoolmathematics and Elementary Mathematics mathematica didactica 37, H. 2 (2014), 213 – 232) (transl. from German).- 11. Structure genetic didactical analyses - empirical research „of the first kind". In:   Błaszczyk, P. & Pieronkiewicz, B. (eds.): Mathematical Transgressions 2015. Kraków: Universitas 2018, 133 – 150.- 12. Understanding and Organizing Mathematics Education as a Design Science – Origins and New Developments. Hiroshima Journal of Mathematics Education vol. 12 (2019), 1– 20.

Erich Ch. Wittmann finished his studies of mathematics and physics at the University of Erlangen from 1959 to 1964 and his practical training as a teacher for the gymnasium in 1966 with the Bavarian State Examination and the PhD in mathematics in 1967. After three years in mathematical research at the Dept. of Mathematics/Erlangen he was appointed full professor of mathematics education at the University of Dortmund.  In 1987 he was co-founder of the developmental research project Mathe 2000. His international reputation has been acknowledged by the invitation to a plenary lecture at ICME 9.

“Both teachers I interviewed were particularly interested in the examples of teaching units proposed in the book. These teachers’ reactions further confirm the validity of Wittmann’s vision of mathematics education as a design science. … I read their words as a wish to base their educational commitment … . This appears to me the main message of the book and a sensible output of the searching for common ground for mathematics and mathematics education … .” (Fulvia Furinghetti, Educational Studies in Mathematics, Vol. 111 (2), 2022)

• Preface.- Introduction.- 1. Teaching Units as the Integrating Core of Mathematics Education. Educational Studies in   Mathematics 15 (1984), 25–36.- 2. Clinical Interviews Embedded in the „Philosophy of Teaching Units“ – A Means of Developing Teachers’ Attitudes and Skills. In: Christiansen, B. (ed.), Systematic Cooperation Between Theory and Practice in Mathematics Education, Mini-Conference at ICME 5 Adelaide 1984, Copenhagen: Royal Danish School of Education, Dept. of Mathematics 1985, 18–31 .- 3. The mathematical training of teachers from the point of view of education. Survey Lecture at ICME 6. Journal für Mathematik-Didaktik 10 (1989), 291–308.- 4. Mathematics Education as a ‘Design Science’. Educational Studies in Mathematics 29 (1995), 355–374 .- 5. Standard Number Representations in Teaching Arithmetic. Journal für Mathematik-Didaktik 19 (1998), No. 2/3, 149 – 178.- 6. Designing Teaching: The Pythagorean Theorem. In: Cooney, Th. P. (ed.), Mathematics, Pedagogy, and Secondary Teacher Education. Portsmouth, NH: Heineman 1996, 97–165.- 7. Developing mathematics education in a systemic process. Plenary Lecture at ICME 9.     Educational Studies in Mathematics 48 (2002), 1–20.- 8. The Alpha and Omega of Teacher Education: Stimulating Mathematical Activities. In:      Holton, D., Teaching and Learning at University Level. An ICMI Study. Dordrecht: Kluwer Academic Publishers, 2002, 539 – 552.- 9. Collective Teaching Experiments: Organizing a Systemic Cooperation Between Reflective Researchers and Reflective Teachers in Mathematics Education. In: Nührenbörger, M. et al. (2016). Design Science and Its Importance in the German Mathematics Educational Discussion. (p. 26-34) Rotterdam: Springer .- 10. Operative Proofs in Schoolmathematics and Elementary Mathematics mathematica didactica 37, H. 2 (2014), 213 – 232) (transl. from German).- 11. Structure genetic didactical analyses - empirical research „of the first kind". In:   Błaszczyk, P. & Pieronkiewicz, B. (eds.): Mathematical Transgressions 2015. Kraków: Universitas 2018, 133 – 150.- 12. Understanding and Organizing Mathematics Education as a Design Science – Origins and New Developments. Hiroshima Journal of Mathematics Education vol. 12 (2019), 1– 20.