I hold a master's degree in mathematics from University of Houston and a master's degree in electrical engineering from a prestigious university in China.

I have very extensive experience in teaching and tutoring various subjects in mathematics. While at University of Houston, I taught college algebra, calculus I and calculus II for

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My high school senior, who has always been a very good math student, took Calc III through Collin College online. For the first time ever, she struggled with a math class. Ping helped her understand the concepts being taught and how to approach each problem and work through to the correct solution. His help was invaluable! And he goes above and beyond. He spent time after her lessons working out solutions to difficult problems they were unable to finish and sent her the solutions with invitations to call him with questions. She would not have gotten an A in the class without him! I should also mention that he is very responsive and flexible about working with your schedule. Highly recommend!!!

Ping is very patient, helpful, and kind. When I would forget a concept or not understand something he taught me, he would reexplain it to me in a different way until I finally understood what he was trying to teach me. I say that he is flexible because although he has his own personal and busy life, he still works with me and my busy life as well which I really appreciate.

Ping helped me before my first calc 2 test when I was freaking out. He adapted to the way that my teacher was teaching it and even made me more practice sheets than what my teacher had given me. He was willing to work around my schedule and was very helpful! I met with him 5 times and got a b on the test when the average was a 65! I was thrilled.

I wa very pleased with Ping because he helped me understand my trigonometry and pre calculus better. I still have a lot to learn but thats why I am going to continue to have him tutor me. Highly recommended!

My Ping is truly an expert in Calculus! He explains difficult to understand concepts in a way that you begin to see problems more differently and more clearly. I believe his greatest attribute is Patience

Ping is a great AP Calculus teacher! My daughter learned a great deal in just one hour with him. We will use him again and recommend him HIGHLY!! Thank you, Ping!

Great tutor. Very knowledgeable and patient. Helped my son understand concepts of Algebra 2 in very first session. Highly recommend him.

Ping has been a great help to my son after only 2 sessions. Ping is patient and explains math concepts in a way that is truly helping my son gain confidence in his ability to do well in his pre-calculus class.

Ping is well versed and knowledgeable about advanced calculus. Has mastered all aspects of the subject and can teach in a way that is understandable. Very patient and detailed so that you can understand the subject in your own mind. Recommend highly.

I am so happy I found Ping as a tutor for my son! He taught the concept of "limits", something so abstract yet my son fully grasped after just one lesson! Ping was very good at explaining, giving examples, and involving the student in the thinking process. My son had tried a couple of other math tutors before but I had never seen him gush about a tutor or math in general. His comment is "I really get it!! Mr. Z makes me get it!" We certainly found the right tutor.

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All of the young students who I tutored became very proficient in math. Some of my students have achieved perfect scores on the math portion of the SAT exam. One of them won first prize in collegiate level math competitions. They went on to some of the best colleges such as Stanford University, Rice University, University of Texas at Austin, etc.

All of the young students who I tutored became very proficient in math. Some of my students have achieved perfect scores on the math portion of the SAT exam. One of them won first prize in collegiate level math competitions. They went on to some of the best colleges such as Stanford University, Rice University, University of Texas at Austin, etc.

I worked as a teaching assistant for calculus 1, 2 and 3 at University of Houston while I was working on my master's degree in mathematics. In recent years I have tutored many high school and college students at all levels of calculus. I am very familiar with this subject. My strength is I can explain difficult concepts from different angles. I can design practice problems on the fly to help my students to reinforce certain concepts.

I am very familiar with geometry. Through years of teaching I have come up with ways to explain the tricky concepts from different perspectives. And I am able to come up with practice problems on the fly to help my student drill and reinforce important concepts.

I taught College Algebra and tutored calculus 1, 3 and 3 at University of Houston while I was working on master's degree in mathematics. In the past four years I have tutored multiple high school students Precalculus.

Probability is one of my favorite subjects. I understand how confusing it can be when it comes to solving problems that involves permutation, combination, event space and sample space etc. Through years of teaching I have come up with ways to explain the tricky concepts from different perspectives. And I am able to come up with practice problems on the fly to help my student drill and gain deeper understanding in this area.

I am very familiar with trigonometry. I understand how daunting it can be for beginners to learn the many definitions, formulae and identities involved in trigonometry. Through years of teaching I have come up with ways to explain the tricky concepts from different perspectives. And I am able to come up with practice problems on the fly to help my student drill and reinforce important concepts.

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Calculus Specialist