Houghton Mifflin (HM) packages for 2nd include a student text and educator edition CD-ROM. The CD-ROM consists of book pages for the instructor edition and student edition, assessment resources, an instructor resource book which includes reading abilities and chapter idea worksheets, student resources that include worksheets for Investigate & Record, lesson testimonial, composing in science, mathematics abilities, device review, and testimonial and test preparation. I paid $300.00 Brand New. Asking $150.00 or Best Offer. One kid has utilized this set just. Please don't hesitate to call or text with any concerns. Thanks for looking.