Arithmetic instructional apparatus

The ornamental design for an arithmetic instructional apparatus, as shown and described.

FIG. 1 is a plan view of an arithmetic instructional device showing my new design;

FIG. 2 is a side view of the arithmetic instructional device of FIG. 1; and,

FIG. 3 is a bottom view of the arithmetic instructional device of FIG. 1.

The FIG. 1 view has been shaded to indicate color.

Patent	Priority	Assignee	Title
10074289,	Jun 30 2015	Carol Bonner Design LLC	Interactive and educational tools
9569983,	Sep 24 2012		Conversion wheel
D471235,	Jun 21 2001	Evan McKenna Foundation	Mathematical instructional aide device
D533904,	Aug 16 2005	Magy Quint AS	Chord wheel
D535333,	Aug 16 2005	Magiqiat AS	Chord wheel
D599405,	Feb 22 2006		Rainbow wheel teaching aid
D639339,	Nov 13 2009		Multiplication tables educational aid set
D648392,	Apr 13 2011		Multiplication teaching aid set
D651649,	Mar 08 2011		Phonics education apparatus
D654953,	Nov 13 2009		Multiplication tables educational aid set
D696722,	Sep 24 2012		Translation wheel

Patent	Priority	Assignee	Title
1662503,
199721,
2567497,
284576,
2908439,
3419973,
3624928,
4372742,	Oct 21 1981		Arithmetical teaching aid
4399353,	Jul 23 1981		Color computer wheel
4424039,	Sep 29 1982		Mathematics teaching device
4445865,	Jan 14 1983	A DAIGGER & COMPANY, INC	Method of teaching mathematics
4790757,	Oct 19 1986	Kawai Gakki Seisakusho Co, Ltd	Instrument for practicing multiplication
5018976,	Jan 11 1990		Teaching system for enhancing the learning of sets of facts
666070,
962441,
D354314,	Jan 19 1993		Dart bowling game

Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Dec 29 2000	BOIX GACIA, MARIA	INOXCROM, S A	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	011627	0054	pdf

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