发明名称 Method and system for creating a multiplication and division puzzle
摘要 A multiplication and division puzzle and method of making thereof include a main table having a plurality of cells in rows and columns, the cells being filled with products and multipliers. A template having a plurality of cells that correspond to the plurality of cells in the main table has selected cells removed to form openings therein to reveal a set of product clues in the main table when the template is superimposed or laid thereon. The product clues include the products in the cells of the main table. The non-selected cells that remain in the template, concealing the multiplier answer and non-selected product answers in the main table. The main table and template are used to form a puzzle blank having a plurality of cells containing the set of product clues and empty cells for the user to fill in missing product answers. The main table contains all of the product and multiplier answers.
申请公布号 US8360780(B2) 申请公布日期 2013.01.29
申请号 US20070703817 申请日期 2007.02.08
申请人 BARTON LYNDON O. 发明人 BARTON LYNDON O.
分类号 G09B23/02;G06F7/52;G09B1/00;G09B19/22 主分类号 G09B23/02
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