Learn to calculate the day of the week for any between 1800 and 2200 using the Doomsday Algorithm. Track progress with personal times. Compare results with calculated values. Save custom mnemonics for special dates in the Doomsday List.
Practice addition, subtraction, multiplication, and division with adaptive exercises and spaced repetition. Track progress with detailed statistics. Use mentor mode for structured review and freestyle mode for flexible practice.
Learn Japanese vocabulary for N5 and N4 levels through shadowing exercises. Listen to audio and repeat to practice pronunciation. Track progress with built-in exercises and review sessions.
Find classroom locations by entering room numbers. View building names and floor details. Navigate using two routing options. Get step-by-step directions within the .
