Math 251 DX01 Drop-In Sessions Wed Jan 13th Fri Jan 15th Wed Jan 20th Part 1 Wed Jan 20th Part 2 Fri Jan 22nd Wed Jan 27th Part 1 Wed Jan 27th Part 2 Fri Jan 29th Wed Feb 3 Fri Feb 5 Wed Feb 10th Part 1 Wed Feb 10th Part 2 Fri Feb 12