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We would like to move people to an online subscription-based grammar resource. I have looked at Focus on Grammar Interactive and found it to be among the best such services, and very cheap. I strongly encourage teachers to have their students sign up for a subscription to FoG Interactive. It's good for one year and has many more features than our old program.
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Jen D. has provided the following information on subscribing to Focus on Grammar Interactive:
Focus on Grammar in now available online, in addition to the textbook. Longman is currently having a promotion that combines access to the online program along with the textbook for a really good price. If any of you would like to add the online program to your textbook, email me before May 7 so that I can update your request. Details are below:
Focus on Grammar Interactive online*:
http://focusongrammarinteractive.com/index.php
*You can sign up for a free 30-day trial. If you decide to use the online program in your class, you'll get free teacher-level access.
Prices (before the bookstore markup)
Book Only 32.25
Book + Audio 37.50
Book + Online Access 43.80 *special promotion price
Book + Audio + Online Access 48.00 *special promotion price
Online Only 22.50
If you're interested in adding the online program, the deadline is May 7.