“Why one can build with atoms as with Lego” - Prof. Loth visited the kid's university in Oberschwaben and held a lecture, introducing atoms and our experimental access to them with scanning tunneling microscopes. Using illustrative examples, Sebastian Loth grabbed the kid's attention and even got many questions from the participants. The participating students numbered up to 130 from 21 different schools, ranging from 2nd to 6th grade.