id: 06079448
dt: j
an: 2012e.00591
au: Hoong, Leong Yew; Phyllis, Joseph; Ling, Lee Hui; Wei, Felicia Tan Yi;
Hassan, Herma Ayuni Binte; Yih, Tay Hui
ti: Lesson study on the area of a parallelogram for year 7 students.
so: Aust. Math. Teach. 68, No. 2, 14-21 (2012).
py: 2012
pu: Australian Association of Mathematics Teachers (AAMT), Adelaide, SA
la: EN
cc: G33
ut: plane geometry; area; polygons; teaching methods; geometric concepts; grade
7; geometry
ci:
li: http://www.aamt.edu.au/Webshop/Entire-catalogue/Australian-Mathematics-Teacher
ab: Summary: This article describes a lesson study on the area of a
parallelogram for year 7 students. In Singapore, students in secondary
schools are streamed into ability bands. Normal (academic) is the label
for the middle band. The teachers were convinced that lesson study
provided a valuable platform for professional development. The authors
followed the key steps of the lesson study process as delineated by a
number of writers. These steps include: (1) identifying the problem and
setting goals; (2) designing the lesson of focus; (3) teaching,
observing, and refining; and (4) sharing of results. As a lesson study
team, the authors focused on the topic of mensuration and subsequently
zoomed-in further to the lesson on “area of parallelogram” as the
lesson of focus. They discuss their experiences in teaching the topic
“area of parallelogram”, especially the difficulties they faced in
helping their students understand how to derive the formula “base x
height”. In the Singapore context, “height” is taken to mean
“perpendicular height”. The aim of this paper is to share the
learning experiences of the team as they underwent the Lesson Study
process. (ERIC)
rv: