When you are in a class, swipe from Left to Right across your screen to bring up the Sidebar. Here you can mark Attendance, record Achievement's & Behavior, as well as access your Marksheets.
To view your Marksheets, tap on Marksheets in the Sidebar. Then, tap on Search to view a list of all of the Marksheets available to you. Tap on one to open it.
Here you can view your full Marksheet as you have been editing it on your PC. You can also edit your Marksheet by tapping on any of the cells and adding in your marks - Just be sure to press Save when you're done!
If you tap on the 'Eye' icon at the top, SIMs will bring up an area at the bottom of your Marksheet that will automatically calculate the average results from your columns, as well as some other handy figures.
As always, be sure to press Save when you're done!