In the new eLearning platform, the answers you enter for Practice Set questions are automatically saved. Therefore, the new platform does not have a "Save without Submitting" button.
This information is also on the Instruction Sheet for Practice Sets. It is IMPERATIVE that you make sure your student is following the steps on this sheet for every Practice Set. It should be printed and placed on the student's desk for easy access.
For more information, please see: "How to Check Student Work" and the Teacher Guide.