Key points are not available for this paper at this time.
Journal Article Laying the Foundations of Numeracy: A Comparison of Primary School Textbooks in Britain, Germany and Switzerland Get access HELVIA BIERHOFF HELVIA BIERHOFF Address for correspondence: NIESR, 2 Dean Trench Street, Smith Square, London, SW1P 3HE, UK. Search for other works by this author on: Oxford Academic Google Scholar Teaching Mathematics and its Applications: An International Journal of the IMA, Volume 15, Issue 4, December 1996, Pages 141–160, https://doi.org/10.1093/teamat/15.4.141 Published: 01 December 1996
Helvia Bierhoff (Sun,) studied this question.