Hennigsdorf
The children from the Biber-Grundschule in Hennigsdorf did 2013 not only collect for the first time (and then up to 12 weeks in one stretch!) but also made wonderful Letter-to-the-Politician-Footprints.
Nuthetal
Also in Nuthetal they ZOOMed in for the first time: 466 children in 7 daycare facilities collected 16558 Green Footprints!
