It is very busy at the post office, Pio Carrier pigeon has his wings full! Can you help him with his mail? On each of the letters and postcards is a number, this is the value of stamps that the letter needs. Match stamps that together have the value of the number on the letter. Have you found the right stamps? Then stamp the letter, because it can go with the post! Whoever manages to frank the most letters is the winner. With this game children playfully train their math skills, but it is above all a lot of fun to do!