The first time I was assigned to teach an introductory linear algebra course, I was able to find a number of resources which were helpful. For example, Linear Algebra Gems and Resources for Teaching Linear Algebra were good. I found several other books, as well.
It looks like I will soon be assigned to teach an introductory course in differential equations, and I thought I should try to find some equivalent resources. So I searched... Amazon, the MAA Web site, here and there, without much success.
I searched here, too, but found only a thread or two that was of interest.
If any of you would suggest some resources, I'd be appreciative. The text we're using is Boyce-DiPrima, 10th ed.
I like the book of Braun: Differential Equations and their Applications. http://www.amazon.com/Differential-Equations-Their-Applications-Introduction/dp/0387978941
It has a lot of good examples, very developed (with historical motivation, data and the original models).