Update teaching.md

Author: zyaocoder

_pages/teaching.md

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 Teaching Assistant of CSE-160: Introduction to Data Science, Spring 2021
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 * P.C. Rossing College of Engineering and Applied Science, Lehigh University
 * Instructor: [Dr. Brian D. Davison](https://www.cse.lehigh.edu/~brian/)
 * Duties: Assisted 100+ students in understanding Machine Learning and data mining theory; Hosted weekly lab sessions to guide students in hands-on coding exercises
 
 Teaching Assistant of CS-2214: Computer Architecture, Fall 2019 & Spring 2020
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 * Tandon School of Engineering, New York University
 * Instructor: [Prof. Anam Waheed](https://www.linkedin.com/in/anam-waheed/)
 * Duties: Held office hours twice a week to help 150+ students with their questions; Collaborated with the instructor in lecture delivery and exam development