''Keisan Game Sansū Series'' (''Calculation Game: Arithmetic series'') is a video game series focusing on elementary arithmetic

calculation A calculation is a deliberate mathematical process that transforms one or more inputs into one or more outputs or ''results''. The term is used in a variety of senses, from the very definite arithmetical calculation of using an algorithm, to th ...

of basic math, featuring addition, subtraction, multiplication, division, decimals, and fractions. The series is only available in Japanese.

Sansū 1-nen: Keisan Game

is the first in a series of arithmetic learning video games for the

Nintendo Family Computer The Nintendo Entertainment System (NES) is an 8-bit third-generation home video game console produced by Nintendo. It was first released in Japan in 1983 as the commonly known as the The NES, a redesigned version, was released in American ...

. It was released April 25, 1986. This particular game focuses on the basics of and , with one and two digits only. As a video game primarily meant for educational purposes, there is very little variety between the four modes of the game. Half of the modes are for addition, while the other half are for subtraction. These modes each contain short mini-games where the player must solve the displayed math problems. Even though this game is educational, players can only incorrectly answer five times before a game over. This methodology of learning replicated the " sink or swim" philosophy of teaching and would be used in the later games.

Sansū 2-nen: Keisan Game

is the second in a series of arithmetic learning video games for the

. Unlike the first game in the series, the core focus of this video game is on . More advanced versions of and are also included to teach all four basic functions of

arithmetic Arithmetic () is an elementary part of mathematics that consists of the study of the properties of the traditional operations on numbers— addition, subtraction, multiplication, division, exponentiation, and extraction of roots. In the 19th ...

s. Intended to be an educational video game, there is little variety to this video game. Variations for and games are included. Even though this game is educational, players can only incorrectly guess five times before "dying" and being given a game over message. This methodology of learning replicated the " sink or swim" philosophy of teaching. Math problems included with this game allow players to play on a golf course (but with slightly different rules than a regular game of golf), work in a robot factory, and fill the multiplication table full of basic multiplication facts.

Sansū 3-nen: Keisan Game

is the third in a series of

learning video games for the

. The core focus on this video game is exclusively on and . No addition or subtraction facts are taught in this game. Primarily meant for educational purposes, there is little variety. Four modes are utilized, two for multiplication and two for division. These game modes contain short minigames where solving the displayed math problems correctly results in positive feedback. The division rounds allow players to control a submarine, while the multiplication rounds allow the players to become

space cadet ''Space Cadet'' is a 1948 science fiction novel by Robert A. Heinlein about Matt Dodson, who joins the Interplanetary Patrol to help preserve peace in the Solar System. The story translates the standard military academy story into outer space: a ...

s and car drivers. Only five incorrect answers and being hit by "enemy" are accepted before the game prematurely ends. Dividing by zero appears to be expected by the player in the game, simply resulting in an answer of zero. Variations for and games are included with all the four modes of play.

Sansū 4-nen: Keisan Game

is a Family Computer educational video game that was released on October 30, 1986. This video game is an educational game teaching four basic principles: division, adding/subtracting

decimal The decimal numeral system (also called the base-ten positional numeral system and denary or decanary) is the standard system for denoting integer and non-integer numbers. It is the extension to non-integer numbers of the Hindu–Arabic numeral ...

s, adding/subtracting

fraction A fraction (from la, fractus, "broken") represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain size there are, for example, one-half, eight ...

s and multiplying/dividing decimals. Each minigame has two difficulty levels and allows for two players to take turns playing the minigames. In the "Division" and "Decimal Addition & Subtraction" challenges, players have to control a man as he tries to destroy monsters inside a dungeon with a sword. An unbeatable ghost runs outside the building; it cannot be defeated with the sword and will instantly defeat the character if touched. Touching the wrong number answer will instantly cost a life. Climbing to the top of the building results in more math questions being asked. The other challenges result in having to control a

race car Auto racing (also known as car racing, motor racing, or automobile racing) is a motorsport involving the racing of automobiles for competition. Auto racing has existed since the invention of the automobile. Races of various sorts were organi ...

as it navigates through a complex labyrinth. Players must find the exit tile while avoiding rival drivers in order to access the next math question. Referenc
Sansu 4-nen: Keisan Game

Sansū 5+6 Toshi: Keisan Game

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External links

''Keisan Game'' (series)
at

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''Keisan Game''
at

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''Keisan Game''
at Superfamicom.org

References

1986 introductions 1986 video games Children's educational video games Mathematical education video games Japan-exclusive video games Nintendo Entertainment System-only games Nintendo Entertainment System games Tokyo Shoseki games Video game franchises