Catch up or accelerate. Math tutoring from a Ph.D. with 10+ years experience.
Hi. I'm Douglas Zare, a mathematician and tutor.
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 have 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 graduate students.
Availability
Choose a date and time to start booking your class.
Times are displayed in your local time zone.
April 03 - 09, 2025
thu 03/04
fri 04/04
sat 05/04
sun 06/04
mon 07/04
tue 08/04
wed 09/04
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23:00
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Only 20 min.
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Only 20 min.
Can't find the availability that suits your needs?
Yes, you can cancel booking up to 8 hours before the lesson starts, indicating the reason for the cancellation. We will study each case personally to carry out the refund.
How do I pay for the lesson?
At the time you select a lesson or package of hours, you will make the payment through our virtual payment service. You have two options: - Debit / Credit - Paypal Once the payment is settled, we'll send you an e-mail with the booking confirmation.
Can I modify a booking?
Yes, something unexpected can always happen, so you can change the time or day of the lesson. You can do it from your personal area in "Scheduled lessons" through the option "Change date".
Where are the lessons held?
The class is done through classgap’s virtual classroom. Classgap was developed specifically for educational purposes, including many useful features such as: digital whiteboard, online text editor, webcam, screen sharing and many more. View virtual classroom
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