We are back ordered on a few of the Algebra disks so if your course kit arrives with some of the disks “missing” or if you get a ways through your course and think you’ve lost a few, let us know!
(Email support@askdrcallahan.com)
But more than likely we are aware of your dilemma and have them in mail to you already!
We are shipping out the backordered disks by Monday (April 19, 2010), and they are all later disks, not the first one you will need, so you should be fine as far as keeping pace with the course, etc.
Feel free to contact us if you have questions! We are here to help 
