It must be jinxed: Maths causes Bibi Blocksberg quite a headache! But luckily, she can count on her four friends Moni, Marita, Dennis and Florian. Each help Bibi in each respective form - and that's how practising turns into having fun. Assume Bibi's role and playfully learn arithmetic. By combining valuable exercises with a lot of fun the mathematics learning game helps primary school children deepen and broaden their proficiency and understanding of mathematics.