Where Khan Academy fits
Use it to revisit a topic at your own pace and practice the underlying skills.
Check before you choose
Check that the topic sequence matches your course rather than relying on a curriculum label alone.
Find the right edition
Start with the destination for your device or the publisher's website. Use the current requirements and terms there to confirm the edition you need.
Compare the workflow
Courses, flashcards, school workspaces and library borrowing serve different needs. Canvas access depends on your school, while Libby and hoopla depend on a participating library. Check that you can access the material before comparing study features.