Precalc+2-1+Notes

media type="file" key="Precalc 2-1 Notes A.mov" width="670" height="670"

media type="file" key="Precalc 2-1 Notes B.mov" width="672" height="672"

media type="file" key="Precalc 2-1 Notes C.mov" width="675" height="675"