calYc

calYc uses the four basic arithmetic operations and defined number ranges to set arithmetic problems. The level of difficulty is determined by selectable symbols (hatching chick, standing chick, etc.). If a selected symbol is chosen again, further application-related information (e.g., number ranges) and settings (e.g., time, sounds, multiplication tables) become available. If the time measurement is set, a maximum of 20 seconds is added for solutions at the most difficult level and a maximum of 10 seconds for solutions at other levels.