Integrating hour of code and google classroom

I am trying to assign hour of code activities to my students but neither the link nor the google classroom post takes them to the hour of code activity I want them to complete. Instead it takes them to the general site. Can anyone assist me with how to assign an hour of code activity to my students and on how I can track their progress?
I created the class sections and synched with google classrooms but that still doesn’t allow me to see their progress or assign them a specific hour of code activity.