In 1887 the Danish School Museum opened in modest quarters in the attic of a municipal school near Copenhagen. In the next decades the collection expanded and received financial support from the state and the Danish teachers association (founded 1874). Both at the museum and at the annual conferences teachers could get inspiration for state of the art pedagogy through the collections of new and exciting teaching materials. The Danish School Museum had a major collection of more than 12.000 wall charts, collected from all over Europe. The wall charts was a well-known and widely used tool for the new teaching method “object lessons” that became mandatory in the Danish primary school system in 1900. Even though “object lessons” were an old pedagogical idea dating back to Comenius’ principle of autopsy (“to see for oneself”), the method was closely connected to and promoted by a group of young, internationally oriented Danish teachers. The New Pedagogues – as they called themselves – used object lessons as a tool for educating the logic, the senses and the language of the child, as opposed to more traditional pedagogy based on memorizing facts. The paper will outline the history of the Danish School Museum and the connection between the new pedagogy and the collections of teaching materials in Denmark around 1900, with special regards to the wall charts. In addition the paper will present the history of the collection of the wall charts through the 20. Century until today, where the collection survives at the Danish Library of Education. During 2013 the whole collection will be digitalized and catalogued for open access by the public, and the paper will discuss the perspectives for exhibitions and research on the history of education and pedagogy using this and similar collections.