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Cornell, Stanford, Berkeley Grad for Math Tutoring
Tim J. K.

5.0 (44 ratings)

112 hours tutoring

Your first lesson is backed by our Good Fit Guarantee
Hourly Rate: $55
Contact Tim J.
Response time: 31 minutes

About Tim J.

Bio

Hello! My name is Tim, and I have a passion for demystifying math and making it accessible (and fun!) to students at all levels. I have been tutoring middle school, high school and college math for 15 years. My tutoring experience includes: Elementary Math, Algebra 1, Algebra 2, Geometry, Trigonometry, Precalculus, AP Calculus AB, and AP Calculus BC. I have helped students prepare for COOP/HSPT, PSAT, SAT Math, and ACT Math tests. I have also tutored undergraduate linear algebra.

I bring...

Hello! My name is Tim, and I have a passion for demystifying math and making it accessible (and fun!) to students at all levels. I have been tutoring middle school, high school and college math for 15 years. My tutoring experience includes: Elementary Math, Algebra 1, Algebra 2, Geometry, Trigonometry, Precalculus, AP Calculus AB, and AP Calculus BC. I have helped students prepare for COOP/HSPT, PSAT, SAT Math, and ACT Math tests. I have also tutored undergraduate linear algebra.

I bring my industry background in electrical engineering and computer science to problem-solving. I benefited from excellent tutors in my past, and I understand the value of making math less intimidating and more approachable for learners.

My approach to tutoring begins with reviewing materials students provide – e.g., graded homework, exam reviews, course syllabus. This helps me understand the context and create a game plan. In the tutoring session we set modest goals and work through problems together in a non-judgmental fashion. Each session is tailored to the student’s current skill level and needs. Once a foundation is set, I slowly introduce challenge problems that help students stretch their thinking. Students I have tutored consistently score very well on homework/tests, attain top marks on AP exams, and routinely earn SAT and ACT scores in the top 3% of all test takers.

I hold a Bachelor of Science in Electrical Engineering from Cornell University, have pursued a graduate degree in Computer Science at Stanford University (36 units of coursework, 3.8 GPA), and earned an MBA from UC Berkeley’s Haas School of Business (3.9 GPA).

Let’s work together to achieve your academic goals: better grades, higher test scores, and mastery of difficult material. I love one-on-one tutoring because I’ve seen firsthand that every student has the capacity to improve. With patience and practice, students build real confidence.

I look forward to helping you understand math! You can do this!

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Education

Cornell University
Electrical Engineering
Stanford University
Graduate Coursework
Haas School of Business, University of California, Berkeley
MBA

Policies

  • Hourly Rate: $55
  • Rate details: For groups: 30% off for second student; 50% off for each student after that.
  • Lesson cancellation: 2 hours notice required

  • Background check passed on 10/28/2025

  • Your first lesson is backed by our Good Fit Guarantee

Schedule

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Approved Subjects

ACT Math

ACT Math

Though ACT Math can feel puzzling and challenging, I believe many students can improve their math and test-taking skills to show solid improvement. I have helped students scoring in the 20’s attain scores above 32. By applying steady focus on specific math topics, practice yields results. I can work with you to reach your highest ACT goals!
ACT Science

ACT Science

I have tutored the ACT for 10 years, helping students achieve high scores (in the 34 - 36 range) and contributing to their acceptance into some of the most selective US universities: Harvard, MIT, Cal Tech, Stanford, Princeton, U Penn, Carnegie Mellon University, UC Berkeley, and UCLA. I love teaching STEM subjects. I have applied knowledge of chemistry, biology, physics, computer science, and mathematics.
Algebra 2

Algebra 2

Algebra 2 is a critical course serving as an onramp to trigonometry, precalculus, and the SAT/ACT. My tutoring encourages a dialogue about topics to find any areas of weakness that need to be addressed. Your student will gain methodical problem-solving skills to strengthen their understanding and improve their grades. Book with me today!
Calculus

Calculus

Calculus is challenging. My tutoring approach is supportive and methodical. With patience and practice, students improve their conceptual understanding while we build up any weaknesses we come across (trigonometry, algebra, etc.). Student homework and grades improve; most in AP Calculus AB and BC earn 4s and 5s. Let’s work on your Calculus challenges together!
Chemistry

Chemistry

I have tutored students in AP Chemistry for 10 years, guiding them to achieve high scores (4s and 5s) on the AP Chemistry test, with many continuing their studies in chemistry and biology at top universities. I have applied knowledge of physical chemistry, organic chemistry, and computational science in various work roles.
Geometry

Geometry

Geometry is more graphical than most other math courses - it comes with a plenty of shapes and manipulations. My tutoring involves lots of drawing shapes so that students get comfortable picking up a paper and pen and playing around. Though proofs can be challenging, most problems yield when approached methodically. Let's work together on Geometry - please contact me!
Interview Prep

Interview Prep

For both startups and large enterprises, I have conducted over 100 interviews in my career. My approach to helping with job interviews adds knowledge, builds confidence, and greatly increases your chances of a landing that job. I am also a mock interview volunteer at UC Berkeley's Haas School of Business – helping MBA students develop skills and behaviors for their upcoming management consulting, business development, and product management interviews. Let's work together to build a great foundation for all of your interviews in the future.
Precalculus

Precalculus

Precalculus touches on quite a variety of topics, which often causes confusion and anxiety. I bring positivity to the tutoring process and help students' willingness to try (and make plenty of mistakes!). Students then begin to develop a sense of experimentation and grow their self-confidence. Let's help your student improve in Precalculus - please contact me today!
PSAT

PSAT

Working to improve PSAT scores will yield dividends as your student experiences an increasing number of standardized tests in high school. Introducing a bit of rigor in a supportive setting increases student self-confidence and outcomes. I would appreciate the opportunity to work with your student on their PSAT.
SAT Math

SAT Math

Though SAT Math is quirky and challenging, I believe many students can improve their math and test-taking skills to show solid improvement. I have helped students scoring in the 500-600 range attain scores above 700. By applying steady focus on specific math topics, practice yields results. I can work with you to reach your highest SAT goals!
Trigonometry

Trigonometry

Trigonometry is abstract - with new, confusing notation - and a leap for all students. Learning the unit circle, trig identities and functions, and polar coordinates can feel very confusing. By moving slowly and methodically, we demystify these new concepts while getting at any root issues, quite often revealing areas of foundational weakness. That's OK! Learning is all about getting better at the things you are not yet good at. I would love to help you with your trig!
Tim J. K.'s Photo

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Response time: 31 minutes

Ratings and Reviews

Rating

5.0 (44 ratings)
5 star
(44)
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3 star
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Reviews

Knowledgeable and Patient tutor

My son has been studying with Tim for several lessons. Tim has been very patient and professional. He would review my son's study material before the lessons. My son is very comfortable with Tim's teaching, he is more confident now.

Kelly, 11 lessons with Tim J.

Knowledgeable, Patient and Supportive Math Tutor

Mr. Tim impressed us with his patience, knowledge, and calm teaching style. He reviewed the course syllabus before class and was well prepared. He explained the concepts clearly, ensured my son understood the topics, and created a supportive and encouraging approach that made learning comfortable and motivating. Thank you so much!

Mandy, 1 lesson with Tim J.

Excellent, Knowledgeable, and patient Tutor

Tim was a great tutor for my sophomore son. He reviewed worksheets ahead of time, explained Pre-Calculus problems clearly, and worked through them step-by-step together. He was flexible with scheduling, and my son always left feeling more confident and comfortable with the material. Thank you Tim!

Laura, 8 lessons with Tim J.

Experienced and knowledgeable teacher

He is an experienced and excellent teacher. Despite the sudden request for a lesson, he showed great professionalism by preparing the material and accommodating the student’s preferred time as much as possible. With his extensive experience, he quickly identified what the student needed and provided highly effective instruction. We hope to continue having more lessons with him.

SJ, 3 lessons with Tim J.
Hourly Rate: $55
Response time: 31 minutes
Contact Tim J.