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Diamond Ring Effect Wide.jpeg
  The Diamond Ring Effect, Solar Eclipse of August 21, 2017, by Max Goldstein, Wilson High School Class of 2019


I have been tutoring off-and-on, mostly on, since 1978. I began as a junior at Columbia High School and tutored math and science at Mt. Hood Community College. I developed a unique peer-tutoring program in the physics department at the Massachusetts Institute of Technology, for which I won the prestigious Polaroid Award. I believe in the power of one-on-one and small group tutoring.

I focus on the following:

  • Physics

    • 9th Grade NGSS Patterns Physics

      • NGSS Patterns Physics Groups for students who are struggling

      • Advanced 9th Grade Physics Groups for ​students who desire enrichment

    • AP Physics 1, 2, C Mechanics​

    • IB Physics

    • First year College Physics with or without calculus

  • 10th Grade NGSS Patterns Chemistry​. I recommend George Penk for AP or IB Chemistry.

  • Note: Not biology. I am looking for a good biology tutor to refer students to.

  • Math​

    • Note: Not 9th grade Geometry. I will do my best to refer students to a qualified tutor.

    • Algebra 1-2

    • Algebra 3-4

    • Precalculus. I am available, but my colleague Abby Larson, is excellent and has precalculus groups.

    • AP Calculus AB, BC. I am available, but my colleague Abby Larson, is excellent and has calculus groups.

    • IB Math (SL and HL); The Analysis versions, not the Applications (statistics) versions. See below.

    • First year College Calculus

    • Note: Not statistics. I strongly recommend Debby Barany for any math, but especially statistics.

  • GED

    • I think the GED is a fine route for all kinds of students​ from those who are struggling in high school academically, emotionally, and/or socially, to those who are doing great in high school, but just want to get their GED and do something that fills their souls a bit more. I did this last year and the students and I had great success.

  • Dead Scientists Society​ (provisional name)

    • The Dead Scientists Society is a secret society of youths who are fascinated by math, science, nature, mystery, problem solving, and adventure. Supervised by me. Lots of learning. Nothing like school. No set schedule. Eight or so youths. Fee to be determined. Let me know if you are interested.



Contact me by email to schedule. Provide your phone number, I will call you as necessary.



I meet students at my office:

  • 7912 SW 35th Avenue, Suite #3, Portland OR 97219-2427.

  • That is above Marcos Restaurant in the historic Nelson Thomas Building, Multnomah Village.

  • I am open to Zoom tutoring as needed. 

  • My travel schedule will require that in-person student might occasionally meet via Zoom.

If you or your student needs some help with any of these classes, send me an email by clicking the email address at the bottom of this page. Tell me:

  • The name of the student, contact information, class name, school, teacher.

  • Whether you prefer an individual or small group setting. Groups can be formed by clients or by me. Talk to me, we will figure it out.

  • I am prioritizing small groups this year!

  • Your preferred day and time.

TUTORING RATES for classes other than AP, IB, College

1 student = $80/hour

2 students = $100/hour = $50/hour each

3 students = $120/hour = $40/hour each

4 students = $140/hour = $35/hour each

more than 4 students =    $30/hour each

TUTORING RATES for AP, IB, College, and other Advanced Courses

1 student = $100/hour

2 students = $120/hour = $60/hour each

3 students = $150/hour = $50/hour each

4 students = $180/hour = $45/hour each

more than 4 students =    $40/hour each


See the "About" page for a resume and references.


Anyone who is a descendent of slaves in the US in the last 500 years receives a 50% discount. This is part of my contribution to reparations for US slavery.

Anyone who is a Native American of the Cascade Bioregion receives a 50% discount. This is part of my contribution to reparations for the US stealing native land.

Anyone who cannot afford my rates is welcome to apply for a partial fee-waiver. If your family income is the same as mine or more, you need to pay full price (except for the two discounts above). If your income is one-half of mine, you pay half-price. If your family income is one-quarter of mine, you pay one-quarter-price. My current gross family income for a family of 3 is about $70,000. 

All discounts are strictly honor system. I believe strongly in the basic decency of humankind.

Anyone who earns more than me is welcome and encouraged to support my efforts to provide high quality tutoring to anyone who desires it by making a donation. Coriolis is a sole-proprietorship for-profit business owned by me. Donations to Coriolis or me are not tax deductible.

If you would like to support my work in general but prefer to make a tax-deductible donation, please do one of the following:

  • Support my youth astronomy education work with the public at-large through the Rose City Astronomers by sending an email to

  • Support the Ida B. Wells High School (SW Portland) Astronomy Club at this link

All of these are fully tax-deductible. If you make a donation to one of these, please also send me an email with your name and the amount so I can make sure the donation is properly accounted for and you are appreciated appropriately.

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