2021

• Vitenskapelig foredrag
  Tesfamicael, Solomon Abedom; Lundeby, Øyvind Andersen; Getie, Berie; Soforon, Oduho George Ben. (2021) Problem posing in mathematics education: comparative study of textbooks in Ethiopia, South Sudan and Norway. The Ninth Nordic Conference on Mathematics Education, NORMA 20 , Oslo 2021-06-01 - 2021-06-04

2019

• Vitenskapelig foredrag
  Tesfamicael, Solomon Abedom; Lundeby, Øyvind Andersen; Sikko, Svein Arne. (2019) TEXTBOOK RESEARCH VIA THE ANTHROPOLOGICAL THEORY OF DIDACTICS (ATD): THE CASE OF REPRESENTATION OF FUNCTIONS. Third International Conference on Mathematics Textbook Research and Development (ICMT 3) 2019-09-16 - 2019-09-19

2017

• Vitenskapelig foredrag
  Tesfamicael, Solomon Abedom; Lundeby, Øyvind Andersen. (2017) Comparative study on Text book: the case of Relations and Functions. Seksjons Seminar på Brekstad , Brekstad 2017-09-28 - 2017-09-29
• Poster
  Tesfamicael, Solomon Abedom; Botten, Geir Harald; Lundeby, Øyvind Andersen. (2017) The teaching and learning of relations and functions: A comparative study of Norwegian and Ethiopian textbooks. CERME 10 , Institute of Education, Dublin City University 2017-02-01 - 2017-02-05

2016

• Vitenskapelig foredrag
  Tesfamicael, Solomon Abedom; Botten, Geir Harald; Lundeby, Øyvind Andersen; Duguma, Tadesse Guluma. (2016) Teaching and Learning Mathematics in Ethiopian Schools As compared to the Norwegian schools (A Comparative study). Nordisk lærerutdanning i et internasjonalt perspektiv , Rotvoll, Trondheim 2016-05-10 - 2016-05-13