From Homepage:
1. From your homepage, select the green +Create New Class button near the top right of your page.
2. Select Import from Google Classroom at the top of the pop up and follow the prompts provided by Google.
From My Classes Page:
1. From the navigation bar on the left of your screen, select Rosters, My Classes. Then, select Import Class From at the top right of your screen and select Google Classroom.
2. Follow the prompts provided by Google.