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Douglas Z.

Providence, RI

$50/hour

Experienced Tutor for Math, Statistics, and Computer Science

100+ Hours
5.0 average from 46 ratings
Wonderful tutor!
— Lona, Providence, RI on 10/7/17

$50/Hour


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New College
Mathematics
Caltech
PhD

Education

New College (Mathematics)

Caltech (PhD)

About Douglas

I was a graduate student in mathematics at Caltech and a postdoc at Columbia University. I left academia to work in industry, but I enjoy teaching. I have written dozens of articles and a book on applying mathematics for general audiences. I'm working on a parent's guide to algebra and book on applying economics to improve environmentalism. I've tutored mathematics, statistics, economics, computer science, and programming since 2013 on other sites.

My goal is to make the material make sense to you. Does it work? Sometimes. I had a 200:1 positive:negative review ratio. I'm constantly trying to improve.

As a graduate student and postdoc, I was a teaching assistant for and then taught calculus, linear algebra, combinatorics, probability, and multivariable calculus, among others. I also coached Caltech's Putnam team and I can help with contest mathematics. I usually tutor college students, but I have also tutored many high school students and a few graduate students.

I am available both for online and live lessons.
I was a graduate student in mathematics at Caltech and a postdoc at Columbia University. I left academia to work in industry, but I enjoy teaching. I have written dozens of articles and a book on applying mathematics for general audiences. I'm working on a parent's guide to algebra and book on applying economics to improve environmentalism. I've Read more

Policies
Cancellation
8 hours notice required

For some subjects, I charge $35/hour for online tutoring.

Travel Radius
Travels within 5 miles of Providence, RI 02904

"Wonderful tutor!"

- Lona, Providence, RI on 10/7/17

"Knowledgeable Tutor!"

- Raphaela, South Easton, MA on 8/24/17
Math:
ACT Math, Algebra 1, Algebra 2, Calculus,
Common Core, Discrete Math,
Elementary (K-6th), Elementary Math, Finite Math,
GED, Geometry, GMAT, GRE, Linear Algebra,
Logic, Prealgebra, Precalculus, Probability, SAT Math, Statistics, Trigonometry
Test Preparation:
ACT Math, Common Core, GED, GMAT, GRE, SAT Math
Computer:
C#, Computer Science
Special Needs:
Common Core, Elementary (K-6th), Elementary Math
Elementary Education:
Common Core, Elementary (K-6th), Elementary Math
Business:
Economics, GMAT, GRE
Sports/Recreation:
Poker

Approved subjects are in bold.

Approved subjects

In most cases, tutors gain approval in a subject by passing a proficiency exam. For some subject areas, like music and art, tutors submit written requests to demonstrate their proficiency to potential students. If a tutor is interested but not yet approved in a subject, the subject will appear in non-bold font. Tutors need to be approved in a subject prior to beginning lessons.

Calculus

I have taught several different levels of calculus. I have applied it in areas like economics and machine learning. Calculus might be the subject I have tutored the most in the last few years.

Discrete Math

Combinatorics was one of my favorite subjects in college and I enjoyed taking three courses on it in the Budapest Semesters in Mathematics program. I wrote my senior thesis in combinatorial design theory. I took and was a TA for advanced combinatorics classes in graduate school. I have tutored students both for discrete math classes for computer science majors (covering things like Turing machines) and discrete mathematics classes which are alternatives to calculus (emphasizing things like proofs by induction and Euclid's algorithm).

Finite Math

I have tutored many students in finite mathematics over the past four years. I have also tutored subjects that use the ideas covered in finite mathematics courses. I can help whether your finite mathematics course focuses on logic and set theory, probability and statistics, or linear programming.

Linear Algebra

I used linear algebra throughout the core graduate classes in mathematics (abstract algebra, analysis, and topology/geometry). I apply linear algebra professionally within Machine Learning. I have tutored students both in calculation-based and proof-based linear algebra courses.

Poker

I used to play poker professionally, concentrating on Hold'em variants. I preferred to coach and coached many of the Sit-N-Go (SNG) players at the top of the Sharkscope leaderboards, including one player who went from not knowing whether a flush beat a straight to the dominant player on Full Tilt's medium stakes SNGs. I made dozens of instructional videos for StoxPoker (which merged with CardRunners) and PokerStrategy. I co-authored a book, The Math of Hold'em, aimed at poker players, covering mathematical aspects of poker strategy, analysis, and bankroll management. I wrote ICM Explorer, a program for investigating the Independent Chip Model of tournament equity.

New College
Mathematics
Caltech
PhD

Education

New College (Mathematics)

Caltech (PhD)

Wonderful tutor!

I joined my statistics class 3 weeks into the semester and missed all the material that was covered on midterm 1. Douglas was extremely helpful and taught me everything that I had missed. Very patient and adjusts his teaching style to your needs! Would definitely recommend Douglas for anyone looking for help with statistics or math in general. He is very knowledgable!

— Lona, Providence, RI on 10/7/17

Hourly rate

Standard Hourly Rate: $50.00

Cancellation: 8 hours notice required

For some subjects, I charge $35/hour for online tutoring.

Travel policy

Douglas will travel within 5 miles of Providence, RI 02904.