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ERIC Number: EJ859715
Record Type: Journal
Publication Date: 2009-Jan
Pages: 5
Abstractor: ERIC
ISSN: ISSN-0025-5785
Changing the Diameter of a Viewing Tube
Obara, Samuel
Mathematics Teaching, n212 p12-16 Jan 2009
This article is about the students' investigation about the relationship between the diameter of the view tubes (x) of constant lengths and the viewable vertical distance (y) on the wall while keeping the perpendicular distance from the eyeball to the wall constant. The students collected data and used and represented it in tabular and graphical form and used TI-84 to analyze the data. They also used "Geometer's Sketchpad" to model the investigation. Here, the author documents the results of this investigation. (Contains 7 figures and 1 table.)
Association of Teachers of Mathematics. Unit 7 Prime Industrial Park, Shaftesbury Street, Derby, DE23 8YB, UK. Tel: +44-1332-346599; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A