## mathroots

In Summer 2015 and 2016, as Academic Coordinator, I designed the
curriculum, recruited and supervised mentors, and gave lectures for the inaugural year of MathROOTS, a summer
camp run by MIT
PRIMES for promising high school students from
underrepresented backgrounds interested in exploring
creative topics in mathematics.

The program was featured on the MIT
Homepage and covered
by MIT
News
and Notices
of the AMS.

## math olympiad

In Summer 2007-2010 and 2012-2016, I taught the US team to the
International Mathematical Olympiad (IMO) at the
Math Olympiad Program.
In 2010, I was the Deputy Team Leader for the US team to the
Romanian Masters in Mathematics. In 2011, I gave a guest lecture to the
UK team to the IMO. In 2012-2013, I
taught the Saudi Arabian teams to the IMO and
International Physics Olympiad.

Notes for selected lectures at the
Math Olympiad Program are below:

Course |
Handout |

Combinatorial Sums |
pdf |

Complex Numbers in Geometry |
pdf |

Polynomials |
pdf |

Smoothing, Fudging, and Ordering |
pdf |

Tricks in Trigonometry |
pdf |

In 2010-2013, I co-authored a feature in
Mathematics Magazine with the problems and solutions from the year's competition.

Feature |
Coauthors |
Link |

54th International Mathematical Olympiad, Mathematics Magazine, 83 (2013), 309-313. |
J. Berman
and Z. Feng |
pdf |

53rd International Mathematical Olympiad, Mathematics Magazine, 82 (2012), 312-317. |
Z. Feng |
pdf |

52nd International Mathematical Olympiad, Mathematics Magazine, 81 (2011), 316-319. |
Z. Feng |
pdf |

51st International Mathematical Olympiad, Mathematics Magazine, 80 (2010), 320-323. |
Z. Feng and P. Loh |
pdf |

## teaching assistant

Semester |
Course |
Institution |
Professor |
Rating (Max) |

Spring 2015 |
18.03: Differential Equations |
MIT |
David Jerison, Gigliola Staffilani |
6.2 (7.0) |

Spring 2009 |
Math 154: Probability Theory |
Harvard |
Lauren Williams |
4.3 (5.0) |