Here's how to assign a worksheet to students using a PIN:
Open the Assign panel from the worksheet's top navigation bar.
2. Click create Assignment
3. Enter name(s) of class(es).
4. Assign to Students
Click the PIN icon to copy & paste the code for students.
5. Students Sign in
Students open the link and sign in with Google+, Edmodo, Microsoft or a full name and password. Email is not required.