I don't see the page as I used to view it before

[BinduUnnithan]

Announcements ,discussions, syllabus ,grade everything is missing from my left side of the page .

[chriscas]

Hi @BinduUnnithan,

Perhaps you've inintentionally colapsed your course menu.  You can click the "hamburger button" next to the course title to show the menu again if that's the case (see the guide at How do I use the Course Navigation Menu as an inst... - Instructure Community).

Hope this helps!

-Chris