Tutor Exercises: For the Tutor Exercises, it is suggested that you first "warm up" by working through the related tutors, and then work on the Tutor Exercises. When asked to “annotate” or explain an answer with equations or calculations, simply unprotect the worksheet, insert extra rows, type in your explanation, and highlight it in your favorite color. Tours: A list of additional virtual facility tours can be found on this site. Also, a compilation of other factory tours can be found at http://www.bygpub.com/books/tg2rw/factorytours.htm and at http://www.mba.wfu.edu/books/om_for_mbas/tours.htm OM Software Library: The material for the OM Software Library can be found at http://www.prenhall.com/krajewski/5e/software/library.htm but the headings and sequence must be adjusted to conform to the new chapter sequence.