Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A bridge bidding aid is designed in the form of a booklet having an oversized cover and a plurality of instruction pages that correspond to various opening bids. The booklet is devised such that, when unfolded at the center of a bridge table, the four players can simultaneously and independently consult the notes to decide on their bids. Also, the information is programmed such that when the opening bidder's notes face the opening bidder, the notes pertaining only to responding bids will face the responder and, similarly, the notes for opponent overcalls and responses will be appropriately positioned in front of the opponents.

Abstract: The dual timing apparatus invented comprises an enclosure having a fluid-filled cavity, a body free to move within the fluid, and a rotatable means to measure and control playing times between opponents in concentration games such as Scrabble, chess, checkers, and the like.

Abstract: The timing device is one in which two float-type timers, a frame, and an angular base are adapted to measure and control playing time in games such as Scrabble, chess, checkers, and the like.

Abstract: The Dual Timer invented makes use of two fluid-type timers arranged perpendicularly to each other in a simply designed hinged mechanism to measure and control playing time in concentration games such as Scrabble, chess and checkers. The mechanism has no moving mechanical parts and is manually operated.