Yes. On the 'Students' tab on your account dashboard click on the student's name or their avatar image (NOT on the 'Access student accounts' link) and then on the glog that you wish to add to the class. Once the glog has opened to full view, scroll down and, on the left side, you will see a 'Glog Admin' menu (shown below) beneath the glog, with options to add to a class page. Select the class that you wish to add the glog to and save the changes.
Please note that, for the glog to appear on the class page, it must be saved as 'Finished.' This can be done by the students during the glog saving process or in the 'Visibility' drop-down menu - see below.