id: 05668530
dt: j
an: 2010c.00192
au: Mason, John
ti: Joined-up reflections: part 2.
so: Math. Teach. Inc. Micromath 2008, No. 211, 40-43 (2008).
py: 2008
pu: Association of Teachers of Mathematics (ATM), Derby
la: EN
cc: D30 C70 D40
ut: geometry; geometric concepts; mathematical formulas; mathematics
activities; reflection; attention control; classroom techniques;
illustrations; educational demonstrations
ci: ME 2009b.00169
li:
ab: Summary: The author drew the 2008 Easter conference to a close. During the
final address, the author chose to focus on the domain of perimeter and
area both because it is a topic accessible to teachers of all ages and
because learners display considerable confusion between them. The core
difficulty seems to lie in the necessity to attend either to the
perimeter of a region or to areas of component regions which make it
up. It is common experience that many learners struggle to see how, for
example, rectilinear regions can be broken up into rectangular parts,
so as to calculate area, and it becomes even more difficult in three
dimensions. The author therefore offered three types of task designed
to promote work on the awarenesses which underpin perimeter and area.
The principal invitation, while working on these tasks, is to try to
catch movements of one’s attention, and what enables him/her to act
(his/her awarenesses). [For Part 1, see EJ815118.] (ERIC) For part 1,
see ME 2009b.00169.
rv: