| 摘要 |
The present invention provides an apparatus that assists a student with learning how to solve word problems, including cash flow type problems, by using the sense of touch to establish a greater pattern of formula recognition and usage. The word problems include a finite set of constant values for a predetermined number of variables. The apparatus includes a preliminary equation that is presolved for a particular set of values. A final equation is also presolved for the particular set of values. The preliminary equation and final equation are movably placed onto a work area which preferably includes a measurement line.
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