id: 05539440
dt: j
an: 2009b.00304
au: Jones, Ian
ti: Sum puzzles.
so: Math. Teach. Inc. Micromath 2008, No. 207, 18-19 (2008).
py: 2008
pu: Association of Teachers of Mathematics (ATM), Derby
la: EN
cc: F43 H33 E43
ut: exchanges; notation; arithmetic; partitioning; commutating; manipulation of
expressions; propaedeutics; elementary algebra; equations
ci:
li:
ab: From the introduction: The author describes his recent work with Year 5
children on their understanding of the equals sign when solving
problems. In arithmetic, the equals sign means \lq is the same\rq .
However, there is more to the equals sign than \lq sameness\rq . It
also means \lq can be exchanged for\rq . And when children work with
this meaning, curious things happen.
rv: