How does a caterpillar turn into a colorful butterfly? In order to not only explain this process to children, but bring it to life right in front of them in the classroom, elementary school teachers can attend workshops taught by members of the science departments at Freie Universität Berlin. Petra Skiebe-Corrette of the Department of Biology, Chemistry, and Pharmacy takes lab experimentation to elementary schools in a new way in the Technology and Natural Sciences at Schools (TuWaS!) initiative: in boxes.