Submitted on: 19 December 2022.
Revised on: 13 April 2023.
Accepted on: 24 April 2023.
___________________Journal fur Mathematik-Didaktik
Submitted on: 26 May 2024.
Revised on: 16 August 2024.
Accepted on: 19 September 2024.
___________________Journal fur Mathematik-Didaktik
Submitted on: 09 September 2011.
Revised on: 04 October 2011.
Accepted on: 25 October 2011.
___________________Journal fur Mathematik-Didaktik
Submitted on: 14 March 2024.
Revised on: 15 May 2024.
Accepted on: 03 July 2024.
___________________Journal fur Mathematik-Didaktik
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Submitted on: 21 December 2020.
Revised on: 25 January 2021.
Accepted on: 06 February 2021.
___________________Journal fur Mathematik-Didaktik