
05240152
a
2008a.00108
Jones, Ian
Pratt, Dave
Three utilities for the equal sign.
Chick, H. L. (ed.) et al., Proceedings of the 29th annual conference of the International Group for the Psychology of Mathematics Education, PME 29, Melbourne, Australia, July 1015, 2005. Vol 14. Melbourne: University of Melbourne, Dep. of Science and Mathematics Education. Part III, 185192 (2005).
2005
Melbourne: University of Melbourne, Dep. of Science and Mathematics Education
EN
C33
U73
H43
equal sign
mathematical meanings
calculators
educational technology
mathematical concepts
elemenary algebra
mathematical logic
lower secondary
emis:proceedings/PME29/PME29RRPapers/PME29Vol3JonesPratt.pdf
Summary: We compare the activity of young children using a microworld and a JavaScript relational calculator with the literature on children using traditional calculators. We describe how the children constructed different meanings for the equal sign in each setting. It appears that the nature of the meaning constructed is highly dependent on specificities of the task design and the tools available. In particular, the microworld offers the potential for children to adopt a meaning of equivalence for the equal sign.