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ERIC Number: EJ867342
Record Type: Journal
Publication Date: 2009
Pages: 12
Abstractor: ERIC
Reference Count: 17
ISSN: ISSN-0819-4564
What You See Is What You Get: Investigations with a View Tube
Obara, Samuel
Australian Senior Mathematics Journal, v23 n2 p35-46 2009
This paper presents an investigation by pre-service secondary school teachers in a geometry class of the relationship between the perpendicular distance from the eyeball to the wall (x) and the viewable vertical distance on the wall (y) using a view tube of constant length and diameter. In undertaking the investigation, students used tabular and graphical representations to determine the relationship. They also used a TI-84 calculator to investigate the relationship, and also modelled the scenario with the aid of "Geometer's Sketchpad" software. In this article, the author offers four reasons to use investigations and presents the first of three investigations posed to a group of preservice teachers in a geometry class for pre-service secondary school teachers in Texas, USA. (Contains 6 figures and 1 table.)
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: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Australia