Degrees and Certifications:

BS Marketing, SUNY Oswego MS Special Education, Long Island University MS Adolescent Education (Mathematics), Long Island University

Mr. Zachary Kellman





    Hello students and families,  

    First, I would like to send my best wishes to you and your families during this challenging time.  

    The best method for communicating with me this school year will be through my Yonkers Public Schools email: 

    In order to access Microsoft TEAMS and receive information about this Math course, you must use your email address provided by the Yonkers public schools. If you are having any issues logging into your Yonkers Public Schools email, please reach out to Riverside’s Library Specialist, Mrs. Westphal, by email at 

    The first day of class is scheduled for September 8th, 2020. See the attachment for the scheduled times of each of your classes. You should have received your daily class schedule by mail, but if you have not, you may be able to access your schedule through PowerSchool using your Yonkers account. 

    If you did not yet complete the Mathematics Summer Project, the project will be your first assignment for the new school year due September 25th, 2020. 

    Please let me know if you have any questions. 

  • Teacher Absence or Technology Failure 

    In the event of a teacher absence or technology failure, please work on the assignments listed in Delta Math. If you need assistance accessing your Delta Math account, please email me to provide you your username or reset your password. 


    Flex Wednesdays 

    On Flex-Wednesdays, please complete the homework assignments titled “Flex Wednesday” in Delta Math.