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ERIC Number: EJ974982
Record Type: Journal
Publication Date: 2012
Pages: 8
Abstractor: ERIC
Reference Count: 5
ISSN: ISSN-0045-0685
Lesson Study on the Area of a Parallelogram for Year 7 Students
Hoong, Leong Yew; Phyllis, Joseph; Ling, Lee Hui; Wei, Felicia Tan Yi; Hassan, Herma Ayuni Binte; Yih, Tay Hui
Australian Mathematics Teacher, v68 n2 p14-21 2012
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. (Contains 6 figures.)
Australian Association of Mathematics Teachers (AAMT). GPO Box 1729, Adelaide 5001, South Australia. Tel: +61-8-8363-0288; Fax: +61-8-8362-9288; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Grade 7; Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Singapore