Karim invites his friends from the city to lunch at his country home. Faced with a delicious pie, the friends perform simple arithmetic such as counting, addition, and subtraction in order to divide it among themselves. But some prefer the pie with sugar and others without—so what will they do? Read, count, and calculate with the six friends. The Green Home series is easy to read, suitable for young children, and helps them become responsible toward their family, environment, and the wider world.