<iframe src="https://podeduc.apps.education.fr/video/7251-calcul-mental-23-un-outil-fantastique-le-collier/?is_iframe=true" width="640" height="360" style="padding: 0; margin: 0; border:0" allowfullscreen loading='lazy'></iframe> Calcul mental 2/3 : un outil fantastique... le collier ! PodEduc https://podeduc.apps.education.fr/videos/?owner=wS_qBCFde6MOM0TZA0qxuspSdXI 360 https://podeduc.apps.education.fr video 640 1.0 110bis lab