Christel Persson ^a* and Anna Musidlowska-Persson b

a Kristianstad University, Sweden,

b Lund University/ Syngenta Seeds, Sweden

* Corresponding author. Swedish National Graduate School in Science and Technology Education Research, Linköping University, Sweden. Department of Mathematics and Science, Kristianstad University,

SE- 291 88 Kristianstad, Sweden. Email: christel.persson@mna.hkr.se