London Bridge, Tower Bridge and a telephone box, created in our school's 3d printer, were just an incentive for the students of the fourth class in order to do a quiz on London's major sights. The photos of the most popular British sights and monuments were placed on cardboards. The students then had to read some information written on paper bubbles, find the answers and stick the "bubble" next to the corresponding sight. The pupils enjoyed the whole procedure since they had to collaborate in order to find as many answers as they could.