Proceedings of the International Week 2017 held in Melk from May 29th to June 2nd

This special issue is dedicated to the 13 th International Congress on Mathematical Education (ICME-13). This congress is held every four years. It is a worldwide meeting and a great opportunity to get in touch with various colleagues from countries all over the world. In 2016 ICME-13 took place in Hamburg (Germany) from 24th of July to 31st of July.  

Proceedings of the "International Week 2016" held in Baden May 30th – June 4th 2016

Editors: Norbert Kraker, Christian Spreitzer