I’ve just finished moving over the practice problems from the old to the new D.1 lessons, so these updated lessons are now complete.  There are a couple of new lessons that don’t yet have problems associated with them.  I do plan to add some problems for those, but there is no time frame for that at the moment.

The existing D.1 summary sheet is still valid, but it will be updated to reflect the new lessons.   Until the flashcards are finished and or moved, I’ll be leaving the old D.1 lessons available for reference.  At the moment I’m not sure when either of these will take place.

The next step is to update the D.2 lessons.  At this time I am keeping my goal of January for rolling these out, although it may be more likely that these will roll out in February.