You can change the name of a lesson while creating it or in an existing lesson by following the steps below:
Go to the desired lesson and click the button "Edit" on the panel:
You will be redirected to the Lesson Builder. Find the panel on the top of the page and click on the name field:
The worksheet settings will be displayed In the pop-up window:
Change the name and click "Save settings." Finish editing by clicking on the following button: