This activity is also part of one or more other Books. Modifications will be visible in all these Books. Do you want to modify the original activity or create your own copy for this Book instead?
This activity was created by '{$1}'. Do you want to modify the original activity or create your own copy instead?
This activity was created by '{$1}' and you lack the permission to edit it. Do you want to create your own copy instead and add it to the book?
Kubus is bijzondere balk
Een kubus is een bijzonder soort balk. Kun jij deze balk zo bewerken dat het een kubus wordt? Gebruik de schuifknoppen!