| 摘要 |
FIELD: information technology. ^ SUBSTANCE: dynamic model designed for obtaining results of multiplying natural numbers AùB, turned figures which correspond to the format of numbers of a telephone T-matrix having three rows and three columns, lying in cells of a table according to "plus one" rules for one step to the right and "plus three" for a step downwards. The model also has a turned cross-shaped rigid figure whose beams are assigned numbers 1, 4, 9 and 16 in the relative order: 1 - top, 4 - left, 9 - right, 16 - down, which enables to read the digits of squares of two-digit numbers in combinations of digits arising when the movable plane turns. ^ EFFECT: direct indication of combinations of digits which enable to remember obtained answers. ^ 11 dwg |
