Abaku is a numeric game for 1 to 4 players, who are lovers of numbers, figures, calculations and games! Everyone who knows that one and one gives two can play it. Playing Abaku significantly improves your calculating skills, logical thinking and intuition. The players are using playing tiles to create numeric operations on the playing board. Addition, subtraction, multiplication, division, squares and cubes of whole numbers and square and cube roots of whole numbers are allowed. The player wins over the other players – calculators thanks to the proper combination of each tile’s value and strategic use of premium squares on the playing board. The aim is to get more points than the others. Numeric operations are created by adding (horizontally or vertically) one or more tiles to tiles already lying on the board. Newly created numeric operation must contain or adjoin one or more tiles lying on the board. Numeric operations must be legible from left to right and from top to the bottom. Abaku is an effective supporting instrument for teaching mathematics.