Students have started this assignment: its steps are locked so their progress stays true to what they saw. Title, goal, unit, attempts, answer reveal and grading stay editable. You can still attach an activity to a step that is not open yet, or replace the activity on a step: students who had finished it keep it done, and the assignment needs Publish again.
Publish to…
Publishing targets the series and every step activity at the classes you pick. Students see it in their course's Assignments list.
This activity has student attempts: questions, answer key and mode are locked so stored scores stay true to what students saw. Title, summary and unit stay editable.
Publish to…
Print / Export
Student worksheet has no answers; the teacher copy carries the key and feedback.
Some YouTube uploaders disable embedded playback. Those videos show an error inside the portal's player. This check loads each video's embed for a few seconds and records the verdict. Flags are saved per video and shown in the editor.