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Ken L.

Computer Programming, Math, Geometry

Port Orange, FL (32129)

Travel radius
30 miles
Hourly fee
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I have over 40 years experience in all aspects of software development, with a focus on graphic and scientific applications. My work often involves calculus, algebra, geometry, and trigonometry. I also have expertise in communications, with an emphasis on language skills.

I have worked solo and participated in many computer programming teams. During my career, I have successfully instructed people at NASA, DARPA, and many corporations, large and small. Students have ranged from scientists and engineers to desert nomads.

I enjoy sharing my knowledge with others. My tutorial style is based on providing a solid conceptual background upon which specific skills and techniques are based, so that students are able to gain a deep understanding of the subject at hand.

My students have often characterized me as being able to teach anything to anyone.

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Ken’s subjects

Corporate Training:
C++, ESL/ESOL, General Computer, Proofreading
English, ESL/ESOL, Proofreading

Adobe Illustrator

When Adobe Illustrator was introduced in 1988, I took a liking to it right away. I began developing plug-ins for it as well as related standalone software products. During all of that time, I have made it a point to keep up with changes in that program, both so that my own software can continue to interact with it meaningfully, and because it has been a useful tool in creating the graphics that my company has used to advertise and document its own products.

I would be very happy to share with you the benefit of the knowledge I have gained over many years of using Illustrator.

Algebra 1

I frequently deal with polynomials of various types: linear, quadratic, and cubic equations are my daily companions. I can provide help in putting you at ease working with algebraic terms and concepts, showing not only steps to solutions of various problems, but providing the underlying conceptual knowledge that explains why the steps are what they are.

Algebra 2

When I was in school I was a bit of a math whiz, often taking math classes several years ahead of my age group. For many years I have been a software developer, primarily working with programs that require a fair amount of algebra and calculus.

Most days I have to use at least a little algebra just in the course of a normal day's work, so I have maintained my algebra skills over quite a few years.


I have 30 years experience programming professionally in C, and 45 years overall as a programmer. I have programmed for both industrial and government clients, and have published software that I developed myself using primarily the C language.

I studied computer science at Cornell University in Ithaca, New York, where I consistently got “A” and “A+” grades in computer courses. Studies included concepts of computer science and a wide variety of computer languages.

I have given instruction in the use of computers, computer concepts, and computer languages to audiences as diverse as NASA, DARPA, Saudi Aramco, and the Saudi Consolidated Electric Company, as well as instructing people on an individual basis.

I tend to stress conceptual computer programming over any particular computer language.

I have written programs in C++, C, Pascal, LISP, Assembly Language, Fortran, Pascal, Python, Visual Basic, PL/I, COBOL, and other languages.


I am an expert computer programmer with over 40 years experience in the field, proficient at all aspects of program design and development. Most of my work involves object oriented design, and I offer instruction in object oriented programming concepts as well as the syntax and semantics of any given computer language.

The level of instruction that I offer is all the way from an introduction to computers suitable for beginners through advanced programming features. People whom I have instructed range from those with no formal education at all up through advanced aerospace engineers.

I have been writing programs in C++ since 1984, and instructing people in the use of those programs during the entirety of that time.


I studied calculus in both high school and college. That gave me the understanding of calculus necessary to create proprietary logic that is used in industry; logic that is based on calculus and developed single handed. Because my software products are still extant, scarcely a day goes by when I do not use calculus in some form.

Computer Programming

I am a professional software developer, both trained and experienced in all aspects of computer programming. I have programmed computers from the largest mainframes down to microchip CPUs that fit inside pocket devices.

During my career as a developer, I have trained many people in how to use and program computers. I have also done training at both government installations and commercial enterprises.

People I have trained have often remarked how clear my instructions are, and how they benefit from the conceptual foundation that I am able to provide as a basis for more detailed instruction.


I have helped many people become more proficient in English. I am completely fluent in English, but also have enough experience with other languages to understand the difficulties of learning a new language. I have an easygoing tutoring style that makes working together a positive experience for both my students and me.


I have held a number of professional positions focused on developing Fortran code. I have successfully written code in Fortran II, Fortran IV, and Fortran 95 for various jobs I have held. In college I wrote a working Fortran compiler, which I used as a basis for other language compilers over the course of my career. At one job, my Fortran skills were sufficiently distinguished that my coworkers asked me to tutor them in Fortran, which I gladly did.

General Computer

I can offer both general and specific information on a wide variety of subtopics within the realm of General Computer learning.


I have been working with geometry for my entire professional life. During my career, I have developed quite a few computer programs that deal primarily with geometry, both 2D and 3D. One of my programs crosses the gap between 2D and 3D: It accepts shapes drawn in 2D and automatically folds them into 3D and displays them. Another program finds optimal machining solutions to turn artwork drawn in an art program into actual manufactured objects. The heart of each of those programs is essentially a geometry engine.


I am quite familiar with Pascal. My first professional contract writing Pascal code was finished well before the client's stated deadline, and exposed techniques that the client then copied into his own Pascal code. I am currently involved in a project whose requirements include writing Pascal code, and the project is going very well. My Pascal code works well, and is clear, concise, and easy to read.


I have had many opportunities to assist people in understanding mathematical processes even though their knowledge of math is limited to arithmetic only. My experience in that kind of assistance ranges from sitting down with paper and pencil to showing people how to use a computer even if they had never seen one before.

Many people whom I have instructed have told me that my style of presentation is easy to follow, and that they are happy with the conceptual knowledge that I have been able to provide.


Precalculus is essentially algebra and trigonometry, and I am quite familiar with both. Many students have told me that they find my tutoring quite easy to follow because I focus on the concepts involved, rather than simply sharing formulas.


As a software developer working mainly with 2D and 3D graphics, trigonometry has been my daily companion over the length of my career. I have an easygoing familiarity with virtually all of the commonly used trig functions, and my tutoring style stresses fundamentals, so that my students gain a firm understanding of the subject at hand rather than learning just a list of equations.

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Cornell University (Engineering)

Hourly fee

Standard Hourly Fee: $50.00

Cancellation: 24 hours notice required

Travel policy

Ken will travel within 30 miles of Port Orange, FL 32129.

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