Marcus GreenFound out about this at the #Moodle #STACKmath conference in #Durham. It is a set of pre-built items for creating STACK questions with #JSXGraph. Have not tried it yet, can anyone else commment?
GitHub - mkraska/meclib: JSXGraph-based dynamic and interactive images in Moodle STACK questions without even touching JavaScript
JSXGraph-based dynamic and interactive images in Moodle STACK questions without even touching JavaScript - GitHub - mkraska/meclib: JSXGraph-based dynamic and interactive images in Moodle STACK qu...