| Department of Mathematics | |
| Community College of Baltimore County, Essex Campus | |
| Baltimore County, Maryland 21237 | |
| Office: F421 | |
| Phone: (443)840-1359 | |
| email: xcui@ccbcmd.edu | |
| Schedule | Teaching |
| Office Hours | Math 251EE1 |
| Math 165EK1 | Math253EB1 |
| Math 082 | Old Exam |