Software for training and testing mental calculation skills to be used after a period of classroom learning in which the most effective techniques for each according to the type of operations to be performed are identified and all the operating techniques for mental calculation are worked on. The user can make all the settings to vary the difficulty of the calculation: number size to the right of the operating sign size of the number to the left of the operating sign first window to make the settings. By pressing the “Validate” button you go to the next window, by pressing “Start” a stopwatch is triggered, the user must then answer and switch from one operation to another using the “Tabulation” key on his keyboard. When all answers are entered and if the success rate is greater than or equal to the one indicated during the setting then a “VBTRIS” set appears. At the end of the game, we return to the results window where we discover our score, the time taken to perform the forty operations. The correct answers are displayed in green and the wrong ones in red. The correction is given. You can keep track of the results by pressing the “Print” button. Alternatively, to work with the whole class on the same operations, you can choose to print eighty operations on an A4 sheet.
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