| 摘要 |
PROBLEM TO BE SOLVED: To more properly and effectively self-learning a relationship between a set expression and a Venn diagram in a set calculation device.SOLUTION: While a blank Venn diagram V3 corresponding to a set expression and the number of sets of the set expression is displayed in a color display part 16, when a region regarded as a correct region is touched and painted by a user through user operation, it is determined whether the region painted by the user is correct or not based on the correct region of the Venn diagram V3 corresponding to the set expression calculated and stored by internal processing. When it is correct, a determination result "TRUE" indicating that the answer is correct is displayed. When it is not correct, a determination result "FALSE" indicating that the answer is not correct is displayed, an unnecessary painted region corresponding to the user operation is displayed in another color, while an additional painted region is displayed in another color, and the correct region is displayed by different colors. |
