Calcul Mental

Calcul Mental is an educational game, allowing children and all others to learn the mental calculation to the perfection. In the era of machine calculation, the calculation in mind is quite possible, and several methods for basic arithmetic operations such as addition, subtraction, multiplication, and division are described in the game as well as referenced to the literature sources. The player is typing in the integer answers for questions appearing for a limited amount of time on the blackboard at nine levels of difficulty and speed. A satisfying number of correct answers transfers the player to the next difficulty level, unsatisfying one keeps him at current level. The Hall of Fame stores the players, who reached the highest levels at highest speeds.