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■ Systematically Train Your Calculation SkillsEven if you know how to solve problems, it's difficult to be "fast" and "accurate" at calculations.This software systematically presents calculation problems, with the order of questions carefully considered, to improve your calculation abilities in a short period.You can train calculation problems for grades 1 through 6, which are necessary to master before entering junior high school. By consistently using the "Today's Problems" feature, which automatically selects daily training based on your calculation ability, you can develop your skills.Once you can solve all problems within the time limit, you will gain the calculation ability to "solve 63 fraction problems in 15 minutes."
■ Write Down Equations by Swapping ScreensNormally, the top screen displays the problem and the bottom screen is for the answer. However, you can swap the top and bottom screens to write down intermediate calculation steps, eliminating the need for scratch paper when performing long division or finding common denominators. After completing the calculation, swap the screens back to enter the answer.Additionally, you can set input restrictions for multiplication, addition, and subtraction to be from right to left, and for division to be from left to right. This helps you learn the correct order of operations, reducing calculation errors.
■ Assess Calculation Ability in a Short TimeIncludes a simple calculation ability check that takes approximately 8 minutes on average. You can understand your calculation ability level (equivalent to approximately Xth grade elementary school).The learning content is categorized by grade level and by skill level (kyu/dan) based on content. There is a certification test for each skill level. To study at a level higher than your set grade, you must pass this certification test.
■ Supervised by: Kazuhiro Fujiwara, Principal of Wadai Junior High School, Suginami Ward"This software was planned to effectively develop the calculation skills necessary for the transition from elementary school to junior high school (from arithmetic to mathematics). We have combined the 'Rakuda Method,' which systematically organizes calculations from grades 1 to 6 and allows users to acquire calculation skills sufficient for mathematics education simply by solving problems in order, with the Nintendo DS, which offers easy yet robust learning through its two screens and touch screen. We have supervised this software to serve as a new fundamental form of training. We hope this software will be used not only by elementary and junior high school students but also by businessmen who struggle with mathematics, and adults who know how to calculate but cannot quickly arrive at the answer."