Use the resources in the classroom information center and on this website to catch up on missing work:
1) The calendar on the website tells you what we do every day, as well as what is coming up in the future
2) The calendar in the classroom information center informs you of the relevant page numbers from the workbook, as well as other work that was completed. 
3) Ms Davis's copy of the workbook includes all notes, warm-up questions, reflection questions, vocabulary words, as well as a date on each page students completed in class
4) The red hanging file in the classroom information center holds all loose question sheets/lab sheets/response sheets, as well as homework assignments, and study sheets - let me know if you can't find the particular page you're looking for
5) If you missed a lab activity, make arrangements to stay after on Monday, Wednesday, Thursday, or Friday to complete the lab after school