All TED-Ed original lessons are available for any user to customize. When you customize a lesson, a new copy of the existing lesson is added to your lessons. You can customize the lesson content in your copy of the lesson by adding to, deleting from, or editing the lesson modules.
To customize a copy of a lesson, look for this button at the bottom right of the lesson page:
Click it to make a complete copy of the lesson and save it to your account. You can now edit the text of the lesson, create new questions, add new discussions, and exclude any sections that you don't need.
Once your customizations are complete, click the Publish button at the top of the page. Your lesson is now ready to be shared!