par Conférence de Ilana Horn, professeure à l'université Vanderbilt au Tennessee. Voici sa description en anglais:
"Aimed toward coaches and teacher leaders, this talk describes how collaborative activities like planning and looking at data can be deepened to support professional learning. Originally presented at the 2013 Northwest Mathematics Conference."
[youtube]http://www.youtube.com/watch?v=-X3KvkTY-bA[/youtube]
