Arithmetic of Practical Measurements to Accompany Kennedy's Improved Dissecting Mathematical Blocks
date: label: date made
content: 1893
name: label: maker
content: Western School Supply House
notes: label: Description
content: In the years following the Civil War, a handful of American educators designed and sold hinged or doweled wooden solids or flat shapes that they could be transposed into other shapes having areas known to students. One of them was Albert H. Kennedy (1848–1940), the superintendent of schools in Rockport, Indiana.
label: Description
content: This small paper pamphlet describes an improved form of Kennedy's models for teaching the arithmetic of practical measurement. Drawings show a model of a rectangle, as well as dissected models designed to show related areas of a parallelogram, a trapezoid and a circle. Other drawings show a model of a rectangular solid and related volumes of a cylinder, a cone, a pyramid, and a sphere, and another model relating to the cone and the cylinder. Further models are described for finding square roots, cube roots, and the area of right triangles. Several practical examples are given for each model described. The pamphlet also includes tables of non-metric weights and measures.
label: Description
content: For related objects, obtained separately, see 2005.0055.
label: Location
content: Currently not on view
place: label: place made
content: United States: Iowa, Des Moines
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Science & Mathematics
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content: Arithmetic Teaching
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2005.3099.01
label: nonaccession number
content: 2005.3099
label: catalog number
content: 2005.3099.01
objectType: label: Object Name
content: pamphlet
physicalDescription: label: Physical Description
content: paper (overall material)
label: Physical Description
content: metal (staples material)
label: Measurements
content: overall: .4 cm x 13.2 cm x 18.7 cm; 5/32 in x 5 3/16 in x 7 3/8 in