Search
Coby P.'s Photo

Northwestern University Teaching Assistant & Math/Phyics/SAT/ACT Tutor
Coby P.

5.0 (189 ratings)

1,041 hours tutoring

Your first lesson is backed by our Good Fit Guarantee
Hourly Rate: $75
Contact Coby
Response time: 10 minutes

About Coby

Bio

I received my Bachelor of Science from Northwestern University, where I studied math, journalism, and political science.

I have tutored students as young as 12 and as old as 50, in math, physics, and standardized test preparation. I have also written and reported for both local and national publications, and have worked for legislators in New York and Washington, D.C.

My math background includes more than 1,000 hours of tutoring experience, spanning algebra, trigonometry, pre-calculus,...

I received my Bachelor of Science from Northwestern University, where I studied math, journalism, and political science.

I have tutored students as young as 12 and as old as 50, in math, physics, and standardized test preparation. I have also written and reported for both local and national publications, and have worked for legislators in New York and Washington, D.C.

My math background includes more than 1,000 hours of tutoring experience, spanning algebra, trigonometry, pre-calculus, and calculus. I worked for two years as a teaching assistant for Northwestern in their calculus sequence, where I graded assignments, proctored exams, led, a weekly discussion section, and held office hours. I was the champion of Connecticut College’s 2021 Integration Bee, a calculus tournament, and 2022 Math Olympiad, a proof-based tournament, and was the school's representative in the Putnam Competition.

As a TA and as a tutor, I have extensive experience in every aspect of the academic process across the fields that I teach. I know how courses progress, how exams are structured, and how work is graded.

My goal with any student is to empower you to build your own unique mental toolkit. We'll often work through an example together, and I’ll explain how I think about each step along the way. Then, once we’ve arrived at an answer, I’ll ask you to explain in your own words what we did and why we did it. That explanation becomes a written step-by-step blueprint to follow when you do the next problem.

I incorporate a variety of visual and interactive tools to keep students engaged, including a digital whiteboard that gives you permanent access to all our work, and I am always happy to send pointers and resources if you have questions between meetings.

Whether it's math, science, or testing, every problem is just a puzzle to be solved, and my goal as a tutor is to help you find your own way of solving puzzles, so that you won’t just get the right answer, but that you’ll actually be engaged and rewarded along the way.

Read more

Education

Northwestern University
Political Science, Mathematics

Policies

  • Hourly Rate: $75
  • Rate details: I’m happy to offer discounted group sessions, where each additional student is only a 20% additional charge.
  • Lesson cancellation: 24 hours notice required

  • Background check passed on 3/7/2024

  • Your first lesson is backed by our Good Fit Guarantee

Schedule

Loading...

Sun

Mon

Tue

Wed

Thu

Fri

Sat

Approved Subjects

ACT Math

ACT Math

I have worked with dozens of students on both SAT and ACT test prep, as well as more than 800 hours tutoring math in general. I also received a 36 on the ACT myself, so I can help you optimize your time and find an efficient problem-solving approach that works for you.
Algebra 1

Algebra 1

– Northwestern University graduate – Two years experience as a math teaching assistant at Northwestern – More than 300 hours of experience tutoring pre-algebra and algebra 1 and 2, in addition to 700 hours of experience with trigonometry, pre-calculus, and calculus – Have tutored students ranging from elementary school to college Through these roles, I have extensive experience supporting students in the entire algebra sequence and in both prior and subsequent courses.
Algebra 2

Algebra 2

– Northwestern University graduate – Two years experience as a math teaching assistant at Northwestern – More than 300 hours of experience tutoring pre-algebra and algebra 1 and 2, in addition to 700 hours of experience with trigonometry, pre-calculus, and calculus – Have tutored students ranging from elementary school to college Through this background, I have extensive experience supporting students in the entire algebra sequence and in both prior and subsequent courses.
Calculus

Calculus

– Northwestern University graduate – Two years experience as a Northwestern University calculus teaching assistant – More than 700 hours of experience tutoring AP and undergraduate single-variable and – Champion of the 2021 Connecticut College Integration Bee, an integral calculus tournament. Through these roles, I have an extensive track record of helping students not only understand the intricacies of calculus, but also building up the foundation beneath it (trig, algebra, and pre-calculus) as needed.
Precalculus

Precalculus

– Northwestern University graduate – Two years experience as a Northwestern University calculus teaching assistant – More than 300 hours of experience tutoring pre-calculus, in addition to 700 hours of experience with trigonometry, algebra, and calculus – Champion of the 2021 Connecticut College Integration Bee, an integral calculus tournament Through these roles, I have an extensive track record with both the conceptual foundations and the applications of pre-calculus.
SAT Math

SAT Math

I have worked with dozens of students on both SAT and ACT test prep, as well as more than 800 hours tutoring math in general. I know how to help you optimize your time and find an efficient problem-solving approach that works for you.
Trigonometry

Trigonometry

– Northwestern University graduate – Two years experience as a Northwestern University calculus teaching assistant – More than 300 hours of experience tutoring trigonometry and pre-calculus, in addition to 700 hours of experience with trigonometry, algebra, and calculus – Champion of the 2021 Connecticut College Integration Bee, an integral calculus tournament Through these roles, I have an extensive track record with both the conceptual foundations and the applications of trig.
Elementary Math
Geometry
Prealgebra
Coby P.'s Photo

Questions? Contact Coby before you book.

Still have questions?

Contact Coby
Response time: 10 minutes

Ratings and Reviews

Rating

5.0 (189 ratings)
5 star
(187)
4 star
(2)
3 star
(0)
2 star
(0)
1 star
(0)

Reviews

Awesome tutor

My son has been working with Coby for a while- initially on Algebra 2 and currently on Precalculus. Coby is very knowledgeable, knows how to teach, and is incredibly patient. My son not only learns a lot during each session, but actually enjoys them. His confidence has improved greatly. I highly recommend Coby.

Stephanie, 49 lessons with Coby

Best Tutor for Math I Have Ever Had!

He helped me study for all of my Calculus tests and get at least a 90 percent in all of them. He can cover a lot of material in a short amount of time and gets to the point when explaining topics. I have gotten a 100% on my final and got a 95% overall grade for Calculus.

Bharath, 40 lessons with Coby

A fantastic tutor who explain everything clearly.

My son has missed a significant amount of school this year due to medical issues, and keeping up with math has been a real challenge. We are incredibly grateful to have found this tutor. He is patient, knowledgeable, and truly committed to helping students understand the material at their own pace. From the very first lesson, he made my son feel comfortable and supported. He explains concepts clearly, gives helpful strategies, and makes sure my child feels confident before moving on. I can already see a big improvement — not only in understanding math, but also in motivation and confidence. We appreciate his flexibility, kindness, and professionalism. Because of the positive progress, we are planning to continue with more lessons. I highly recommend him to any family looking for a dedicated and effective math tutor.

Oksana, 5 lessons with Coby

Knowledgeable and patience tutor

Coby has been an exceptional pre-calculus tutor for my son. He consistently demonstrates remarkable patience and maintains a calm, friendly demeanor, creating a positive and engaging online learning environment. He explains complex mathematical concepts clearly and effectively, which has greatly improved my son’s understanding of the subject. He is also extremely responsive, quickly replying to messages, and is very flexible with scheduling, which we truly appreciate. We are grateful for his dedication and high-quality instruction, and we highly recommend him to any student seeking a knowledgeable and genuinely outstanding tutor.

Swati, 8 lessons with Coby

Very knowledgeable and tutor

Coby was fantastic to work with! He reached out quickly and was very flexible in scheduling a convenient time. I sent the materials ahead of time, and he came extremely well-prepared. During the session, he covered a lot of material and shared helpful tips and tricks that my son was able to apply right away. The use of the virtual whiteboard was especially effective, it allowed my son to follow along easily, and we were able to print out the notes afterward for further review. Coby is not only very intelligent but also has a great ability to explain complex topics in a clear, easy-to-understand way. Highly recommend!

Taunia , 1 lesson with Coby

Knowledgeable and able to communicate complicated Algebra 2 concepts

Coby is doing an excellent job working with my son and finding the challenging concepts, providing guidance on how best to approach them and following up with additional exercises to help build his confidence. It's been grat working with Coby!

Espe, 26 lessons with Coby

My son always learns so much from Coby!

He is very well prepared and on to pint in his teaching. Makes it easy to understand. My son always asks for class with him when he is not clear on topic in Ap calculus BC

PunamBharat, 7 lessons with Coby

Knowledgeable and patient tutor

Coby works with us both on scheduling and topics. Listens to our concerns and caters to my son’s specific needs. Very patient and extremely helpful Highly recommend!

Karen, 47 lessons with Coby

Great interaction

Coby was kind and understanding to my lack of knowledge. Never made me feel bad for not knowing things. Had great explanations and really liked the technology he used to show me how to do things.

Allen, 6 lessons with Coby

VERY good tutor!

If I had a question, Coby always has a solution that's understandable and to the point! And his consistent level-headedness/patience is also something that deserves mention. I'll be sure to keep him in mind for the math classes to come!

Zachary , 52 lessons with Coby
Hourly Rate: $75
Response time: 10 minutes
Contact Coby