id: 05240152
dt: a
an: 2008a.00108
au: Jones, Ian; Pratt, Dave
ti: Three utilities for the equal sign.
so: 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 10‒15, 2005. Vol 1-4. Melbourne:
University of Melbourne, Dep. of Science and Mathematics Education.
Part III, 185-192 (2005).
py: 2005
pu: Melbourne: University of Melbourne, Dep. of Science and Mathematics
Education
la: EN
cc: C33 U73 H43
ut: equal sign; mathematical meanings; calculators; educational technology;
mathematical concepts; elemenary algebra; mathematical logic; lower
secondary
ci:
li: emis:proceedings/PME29/PME29RRPapers/PME29Vol3JonesPratt.pdf
ab: 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.
rv: