Invention Grant
- Patent Title: Manipulative for modeling quantitative concepts
- Patent Title (中): 用于建模定量概念的操纵
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Application No.: US13177547Application Date: 2011-07-06
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Publication No.: US08834167B2Publication Date: 2014-09-16
- Inventor: Barbara Spotts
- Applicant: Barbara Spotts
- Agency: Fox Rothschild LLP
- Main IPC: G09B1/00
- IPC: G09B1/00 ; G09F7/04 ; G09F7/02
Abstract:
A manipulative for modeling quantitative concepts, said manipulative comprising a flat, marking surface, said marking surface having a linear track with a defined start and end point representing a quantity to be measured therebetween, and a plurality of loose articles which can be placed upon the track representing segments of said quantity to be measured.
Public/Granted literature
- US20120006250A1 MANIPULATIVE FOR MODELING QUANTITATIVE CONCEPTS Public/Granted day:2012-01-12
Information query
