Teaching Apparatus, Kanwille Educational Radial Device
date: label: date made
content: ca 1926
notes: label: Description
content: This instrument consists of a cardboard disc with a second disc rotating atop it, held together by a joint at the center. Close to the rim is a circle of drawings of common objects such as an apple, a bird, a cat, a dog, an eagle, a fish and so forth alphabetically to a zebra. Drawings of fourteen additional objects complete the decoration of the rim. Immediately inside this ring of pictures is a ring of capital and small letters that corresponds to the first letter in the spelling of the pictured objects. For example," A a" is next to the drawing of the apple. Inside this ring is a ring of simple multiplication problems, starting with 1 x 1. In side this is ring of fractions, simple whole numbers, and simple algebraic signs (+, -, X, =, etc.). The upper disc also has three holes in it that line up radially. Rotating this hole so that the outmost segment spells out the name of an object (as BIRD bird), the middle window shows the result of the multiplication problem next to the drawing (for the bird, the problem is 1 x 2, so the answer shown is 2) and the innermost window spells out the fraction, number or symbol (for the bird drawing, the fraction shown is 1/8 and the window reveals the phrase one eighth).
label: Description
content: Compare this instrument to U.S. Patent 1,578,708, for a game device, issued to Gene G. Beckhardt of Newark, New Jersey, on March 30, 1926. The patented object was designed for purposes ranging from education to fortunetelling. It had a spinning pointer at the center.
label: Location
content: Currently not on view
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
creditLine: label: Credit Line
content: Gift of Dr. Richard Lodish American School Teaching Collection
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2014.0293.11
label: catalog number
content: 2014.0293.11
label: accession number
content: 2014.0293
objectType: label: Object Name
content: teaching apparatus
physicalDescription: label: Physical Description
content: paper (overall material)
label: Physical Description
content: metal (joint material)
label: Measurements
content: overall: 1.1 cm x 34 cm x 34 cm; 7/16 in x 13 3/8 in x 13 3/8 in