Statistics and probabilities. The courses may or may not be related to finance. - Brussels - Private lessons

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Statistics and probabilities. The courses may or may not be related to finance.

From 25.9 £ /h

The goal is to follow a student all year round and not just during his blockade. The goal is to explain and popularize the material through simple concepts. The student will have to practice in order to achieve the objectives, it is not a question of doing the exercises for them.

Location

|

Use Ctrl + wheel to zoom!

At student's location :

Around Brussels, Belgium

Around Braine-l'Alleud, Belgium

Age

Adults (18-64 years old)

Seniors (65+ years old)

Student level

Beginner

Intermediate

Duration

60 minutes

The class is taught in

French

English

Skills

Computer programming

Availability of a typical week

(GMT -05:00)

New York

At student's home

Mon

Tue

Wed

Thu

Fri

Sat

Sun

00-04

04-08

08-12

12-16

16-20

20-24

From basic statistics (calculating mean, variance ...) to applied statistics in health sciences: Which test to use ?, how to interpret my results? ...
All the basics and prerequisites necessary for a good understanding of the course will be covered.

Student with a degree in political science, public administration and management, having taken advanced courses in statistics, in particular univariate and bivariate descriptive statistics (regression line), but also on probabilities, random variables, estimators and hypothesis tests, as well as as well as linear regression and principal component analysis (PCA), gives lessons to students at secondary level and higher at baccalaureate level.
My methodology is based on a reminder of the essential points of the theory seen in class, the establishment of summary sheets, then the realization of exercises with the student to ensure that he understands the material.
Teaching for 3 years of help in mathematics and statistics to students of secondary and higher level. Face to face or small group of maximum 3 people.
The majority having obtained good results during their exams, they recommended me to their friends and acquaintances.

A highly experienced Franco-Belgian teacher (ook in het nederlands!) offers private lessons in mathematics (including finance), probability and statistics, as well as physics, chemistry, and biology for secondary and higher education levels. For physics, chemistry, and biology, the instruction is tailored to the secondary level, specifically up to the 5th year of secondary education in Belgium.

Whether you prefer lessons at your place, my place, or remotely, I am flexible to accommodate your needs. If necessary, I can travel to your home in Brussels, Walloon and Flemish Brabant, with a minimum duration of 2 hours per session. The lessons are designed to provide extensive practice with numerous exercises. Distance learning options are also available through platforms such as Skype, Facebook, etc. Please note that for students in France, only distance learning courses are provided.

In mathematics, I specialize in various topics and frequently provide lessons covering the entire secondary school curriculum, including math 6 and higher. These topics encompass factorization, equations of the 1st and 2nd degree (with in-depth study of parabolas), limits, derivatives, integrals, exponentials and logarithms, as well as trigonometry. Additionally, I am occasionally called upon to teach analytical geometry in space, including equations of lines and planes.

For statistics and probabilities, I provide instruction in descriptive and inferential statistics (univariate and bivariate), covering confidence intervals and hypothesis tests, applicable to secondary and higher education levels.

Feel free to reach out to me to discuss and arrange the lessons based on your specific needs and availability. My aim is to help you enhance your skills effectively and provide personalized instruction. By tailoring the lessons to your requirements, we can ensure rapid progress in your studies.

Hello, I am a doctoral student in electrical engineering and associate professor in engineering sciences, experienced in the field of electrical engineering, I offer support courses in the subjects of engineering sciences (Electronics, automatics, electrical engineering, automation, programming).

Digital electronics
Analog electronic
electromagnetism (propagation of high frequency waves)
Automatic (continuous, sampled)
electrical engineering (transformers, electrical machines, switching power supply)
C / c ++ programming, Assembler, ARM, STM32
renewable energy (wind, PV)
engineering Sciences
RDM
Python,VHDL
PIC Microprocessor and Microcontroller
Signal processing and data acquisition
Engineering Sciences

These courses allow the student to get up to speed and regain confidence in all scientific subjects, just as they prepare him effectively for the Baccalaureate, the Preparatory Classes or various examinations of the engineering classes.

COURSE OBJECTIVES AND PEDAGOGICAL APPROACH

Resumption and deepening of fundamental concepts through exercises with course reminders.

Put the student in a situation of questioning and research.

Respond to individual issues and questions

Exercise training in order to achieve real mastery of the content.

Learn to build theoretical reasoning from observable facts or hypotheses.

Specific preparation for higher education requirements (in-depth content, increase in work capacity, enrichment of scientific background)

This educational approach is effective since it has often led me to interesting results with my students.

Associate professor provides support courses in electrical engineering

Currently, I am working at the MaaS department in Denso Corporation, Shinagawa, Tokyo.
I have done my masters from the Indian Institute of Technology Hyderabad India recently.
I can teach any subject of Computer Engineering. I will give you class from very basic to advanced level.

I have cracked Graduate Aptitude Teset (GATE) in India and score AIR 1456 among 100000 students. I have in-depth knowledge of Computer Science subjects.

I can teach you coding, Science and Math if you wish to learn new things contact me.

This class is for those who really want to use to learn computer subjects like Computer Networks and Algorithms in a more innovative manner.

I can help you in deciding on your final year project in Computer Science Domain as well.

I little bit know Nihon-Go as well.

When I was a young child, I believed I was not a mathematical person.

It wasn't until I met an amazing teacher at age 15 that I discovered my mathematical genius and my life was changed forever.

I'm eternally grateful to that teacher.

My teacher knew that self-image and self-belief is the key to unlocking your child's mathematical abilities.

Everyone is good at maths, but we all have different styles of thinking.

Bad teachers teach every child the same way.

My job is to find your child's style of mathematics and allow him to discover that for himself.

When he discovers that, he will begin to enjoy the beauty and power of mathematics...and then you will see as the grades begin to soar.

👉Click the blue "Contact Oliver" button above and let's discuss how we can unlock your child's mathematical talents! 😊

(FR/ENGL) Experienced and passionate tutor, I have been supporting students for 6+ years in their mathematics journey, from high school through the beginning of higher education.

🔎 Why choose my lessons?
• Guaranteed progress: my students not only improve their grades, but also gain confidence and independence.
• Personalized teaching: I adapt to each student’s needs (remedial support, exam preparation, advanced learning).
• Engaging and practical lessons: thanks to my degree in Business Engineering (ULB – Solvay School) and my experience as both a high school teacher and a tutor, I enrich my explanations with numerous real-life examples.

🏫 Lesson formats
• At-home tutoring (individual or small group) – available anywhere in Brussels and Wallonia.
• At the teacher’s location – in a classroom near ULB.
• Online or hybrid lessons – interactive and adapted to all profiles using effective digital tools.

💡 My goal: to share not only knowledge, but also a love for learning and solid study methods that will benefit students far beyond the classroom.

Feel free to contact me for any further information; I’ll be happy to help.

Looking forward,
Ryan

I am sure that math is not dry or hard subject because it naturaly appeared from human everyday tasks. Many people are afraid of mathematical theory, howevere it is possible to get pleasure from practising. I can help you to undestand basic or advanced math and teach you to solve different math problems.

From my experience, understanding and solid knowledge are the matter of motivation. As a supervisor of the different levels of students I know how coach them.
For Bachelor, Master and PhD students I can provide help in data analysis and statistics.

If the goal is clear then there is a method. So let's meet to discuss your goal.

💻 Learn IT easily with tailor-made support! 🚀
Do you want to improve your computer skills or discover the basics to better navigate the digital world? I offer courses adapted to all levels, whether you are a beginner or looking to improve.
🌟 Why choose me?
• Adapted teaching: I explain concepts in a simple and clear manner, even for novices.
• Personalized courses: Each session is designed according to your needs and objectives.
• Hands-on learning: Immediately apply what you learn.
📘 Areas covered:
• Introduction to computers (using the computer, browsing the internet, security).
• Office software (Word, Excel, PowerPoint).
• Introduction to programming (Python, HTML/CSS).
• Basics of data management and analysis with tools like Power BI.
🕒 Flexible hours: Classes available on weekdays or weekends, depending on your schedule.
📍 Modalities: In person or online, according to your preferences.
👉 Contact me now to start your adventure in the digital world!

Master Python with Personalized Courses

Discover the art of programming with Python courses tailor-made to meet your specific needs. Whether you are a beginner, intermediate or professional, my lessons are suitable for all levels.

Why Choose My Courses?

Personalized Teaching Approach: Each course is tailored to your skill level and individual goals.

Practical Experience: Learn by doing with real-world projects that build your understanding and skills.

Ongoing Support: Get unlimited email support for any questions you have between sessions.

As a Python expert, I have a passion for teaching and sharing my knowledge. My goal is to guide you effectively in your learning journey.

Book Your First Lesson:

Start your journey to Python mastery now by booking your first lesson. Whether you aspire to enter the development field or hone your existing skills, these courses are designed for you.

Classes are face-to-face at the student's home or via webcam. You will learn computer science according to your level and what you want to learn. I am a computer science student so quite versatile. As far as programming is concerned, the possible languages are: HTML, CSS, PHP, Python, C and C++, for the network, introduction to software such as Cisco packet tracer, GNS3, vmware, virtual box. Introductory computer courses, even rudimentary ones, are possible. You will learn in a jovial and encouraging atmosphere, I have a lot of experience in the field of teaching and I am comfortable with children

Mathematics is the best way to enhance your intellect but also work on your intuition and your ability to see patterns.

Good day, my name is Alex, I have been teaching math for over 10 years to hundreds of students. I will teach all grades from elementary school all the way to high school and IB/GCSE etc.

My philosophy revolves around these three values:
-Encouragement
-Inspiration
-Discipline

I specialize into teaching mathematics and programming, but in some occasions I teach physics too.
Feel free to contact me.

Math and Computer Science Courses for Everyone 🌍

Do you want to improve your math skills or discover (or delve deeper into) the exciting world of computer science? Whether you're a student, a pupil, an adult looking to retrain, or simply curious, these courses are for you!

🔢Mathematics:

Academic support, refresher courses, exam preparation or simply wanting to improve...
➡️ Arithmetic, geometry, fractions, algebra, problem solving...
➡️ A method adapted to the level and pace of each child.

💻 Computer science:

Discover or master the essential digital tools today:
➡️ Office software (Word, Excel, PowerPoint, etc.).
➡️ Programming (Nodejs, Python, JavaScript, HTML, CSS, etc.).

There is no such thing as a weak person, nor is there a subject too difficult: everyone has their own method for learning, and each subject has its own method for being taught. Find your method, discover your own pace, and progress in your own way 🎯

Master Python / C / C++ / SQL with personalized courses

Discover the art of programming with Python / C / C++ courses tailored to your specific needs. Whether you're a beginner, intermediate, or professional, my lessons are suitable for all levels.

Why Choose My Courses?

Personalized Teaching Approach: Each course is tailored to your skill level and individual goals.

Practical Experience: Learn by doing with real-life projects that strengthen your understanding and skills.

Ongoing Support: Get unlimited email support for any questions you have between sessions.

As a Python/C/SQL expert, I have a passion for teaching and sharing my knowledge. My goal is to effectively guide you on your learning journey.

Book Your First Lesson:

Start your journey to Python/C++/SQL mastery now by booking your first lesson. Whether you're looking to break into development or hone your existing skills, these courses are designed for you.

Are you looking for a reliable and experienced Economics teacher to support your child at secondary school level in Belgium? I offer comprehensive and personalised Economics tutoring, fully aligned with the Belgian secondary school curriculum. With solid experience in secondary education, I help student s understand key economic concepts, build confidence, and achieve better academic results, whether for regular follow-up, homework support, or exam preparation.

Topics Covered – Full Secondary Economics Curriculum
• Introduction to Economics
(needs, scarcity, economic agents, decision-making)
• Market Economy and Firms
(supply and demand, price formation, production, competition)
• Money, Banking and Basic Finance
(functions of money, banks, credit, savings, inflation – secondary level)
• Labour Market and Economic Policies
(employment, unemployment, wages, role of the State)
• Household Economics and Consumption
(household budget, purchasing power, responsible consumption)
• Basics of Accounting and Management
(income and expenses, costs, basic financial management)
• Economics and Sustainable Development
• Belgian and European Economy – Key Concepts
• Economic Methodology and Exam Skills
(reading graphs, analysing texts, structuring answers)
• Applied Economics: exercises and case studies

Teaching Approach
✔ Clear and structured explanations
✔ Step-by-step progression
✔ Adapted to the student’s level and learning pace
✔ Practical exercises and real-life examples
✔ Focus on exam techniques and methodology
✔ Supportive and confidence-building environment

Learning Objectives
• Improve understanding of Economics
• Achieve better school results
• Gain confidence and autonomy
• Prepare effectively for exams
• Develop strong analytical and study skills

For Parents
I provide a serious, supportive and structured learning framework.
Regular feedback can be shared with parents regarding the student’s progress and areas for improvement.

Practical Information
• Level: Secondary school (all grades)
• Curriculum: Belgium (FWB)
• Format: Online or in-person
• Language: English or French

From basic statistics (calculating mean, variance ...) to applied statistics in health sciences: Which test to use ?, how to interpret my results? ...
All the basics and prerequisites necessary for a good understanding of the course will be covered.

Student with a degree in political science, public administration and management, having taken advanced courses in statistics, in particular univariate and bivariate descriptive statistics (regression line), but also on probabilities, random variables, estimators and hypothesis tests, as well as as well as linear regression and principal component analysis (PCA), gives lessons to students at secondary level and higher at baccalaureate level.
My methodology is based on a reminder of the essential points of the theory seen in class, the establishment of summary sheets, then the realization of exercises with the student to ensure that he understands the material.
Teaching for 3 years of help in mathematics and statistics to students of secondary and higher level. Face to face or small group of maximum 3 people.
The majority having obtained good results during their exams, they recommended me to their friends and acquaintances.

A highly experienced Franco-Belgian teacher (ook in het nederlands!) offers private lessons in mathematics (including finance), probability and statistics, as well as physics, chemistry, and biology for secondary and higher education levels. For physics, chemistry, and biology, the instruction is tailored to the secondary level, specifically up to the 5th year of secondary education in Belgium.

Whether you prefer lessons at your place, my place, or remotely, I am flexible to accommodate your needs. If necessary, I can travel to your home in Brussels, Walloon and Flemish Brabant, with a minimum duration of 2 hours per session. The lessons are designed to provide extensive practice with numerous exercises. Distance learning options are also available through platforms such as Skype, Facebook, etc. Please note that for students in France, only distance learning courses are provided.

In mathematics, I specialize in various topics and frequently provide lessons covering the entire secondary school curriculum, including math 6 and higher. These topics encompass factorization, equations of the 1st and 2nd degree (with in-depth study of parabolas), limits, derivatives, integrals, exponentials and logarithms, as well as trigonometry. Additionally, I am occasionally called upon to teach analytical geometry in space, including equations of lines and planes.

For statistics and probabilities, I provide instruction in descriptive and inferential statistics (univariate and bivariate), covering confidence intervals and hypothesis tests, applicable to secondary and higher education levels.

Feel free to reach out to me to discuss and arrange the lessons based on your specific needs and availability. My aim is to help you enhance your skills effectively and provide personalized instruction. By tailoring the lessons to your requirements, we can ensure rapid progress in your studies.

Hello, I am a doctoral student in electrical engineering and associate professor in engineering sciences, experienced in the field of electrical engineering, I offer support courses in the subjects of engineering sciences (Electronics, automatics, electrical engineering, automation, programming).

Digital electronics
Analog electronic
electromagnetism (propagation of high frequency waves)
Automatic (continuous, sampled)
electrical engineering (transformers, electrical machines, switching power supply)
C / c ++ programming, Assembler, ARM, STM32
renewable energy (wind, PV)
engineering Sciences
RDM
Python,VHDL
PIC Microprocessor and Microcontroller
Signal processing and data acquisition
Engineering Sciences

These courses allow the student to get up to speed and regain confidence in all scientific subjects, just as they prepare him effectively for the Baccalaureate, the Preparatory Classes or various examinations of the engineering classes.

COURSE OBJECTIVES AND PEDAGOGICAL APPROACH

Resumption and deepening of fundamental concepts through exercises with course reminders.

Put the student in a situation of questioning and research.

Respond to individual issues and questions

Exercise training in order to achieve real mastery of the content.

Learn to build theoretical reasoning from observable facts or hypotheses.

Specific preparation for higher education requirements (in-depth content, increase in work capacity, enrichment of scientific background)

This educational approach is effective since it has often led me to interesting results with my students.

Associate professor provides support courses in electrical engineering

Currently, I am working at the MaaS department in Denso Corporation, Shinagawa, Tokyo.
I have done my masters from the Indian Institute of Technology Hyderabad India recently.
I can teach any subject of Computer Engineering. I will give you class from very basic to advanced level.

I have cracked Graduate Aptitude Teset (GATE) in India and score AIR 1456 among 100000 students. I have in-depth knowledge of Computer Science subjects.

I can teach you coding, Science and Math if you wish to learn new things contact me.

This class is for those who really want to use to learn computer subjects like Computer Networks and Algorithms in a more innovative manner.

I can help you in deciding on your final year project in Computer Science Domain as well.

I little bit know Nihon-Go as well.

When I was a young child, I believed I was not a mathematical person.

It wasn't until I met an amazing teacher at age 15 that I discovered my mathematical genius and my life was changed forever.

I'm eternally grateful to that teacher.

My teacher knew that self-image and self-belief is the key to unlocking your child's mathematical abilities.

Everyone is good at maths, but we all have different styles of thinking.

Bad teachers teach every child the same way.

My job is to find your child's style of mathematics and allow him to discover that for himself.

When he discovers that, he will begin to enjoy the beauty and power of mathematics...and then you will see as the grades begin to soar.

👉Click the blue "Contact Oliver" button above and let's discuss how we can unlock your child's mathematical talents! 😊

(FR/ENGL) Experienced and passionate tutor, I have been supporting students for 6+ years in their mathematics journey, from high school through the beginning of higher education.

🔎 Why choose my lessons?
• Guaranteed progress: my students not only improve their grades, but also gain confidence and independence.
• Personalized teaching: I adapt to each student’s needs (remedial support, exam preparation, advanced learning).
• Engaging and practical lessons: thanks to my degree in Business Engineering (ULB – Solvay School) and my experience as both a high school teacher and a tutor, I enrich my explanations with numerous real-life examples.

🏫 Lesson formats
• At-home tutoring (individual or small group) – available anywhere in Brussels and Wallonia.
• At the teacher’s location – in a classroom near ULB.
• Online or hybrid lessons – interactive and adapted to all profiles using effective digital tools.

💡 My goal: to share not only knowledge, but also a love for learning and solid study methods that will benefit students far beyond the classroom.

Feel free to contact me for any further information; I’ll be happy to help.

Looking forward,
Ryan

I am sure that math is not dry or hard subject because it naturaly appeared from human everyday tasks. Many people are afraid of mathematical theory, howevere it is possible to get pleasure from practising. I can help you to undestand basic or advanced math and teach you to solve different math problems.

From my experience, understanding and solid knowledge are the matter of motivation. As a supervisor of the different levels of students I know how coach them.
For Bachelor, Master and PhD students I can provide help in data analysis and statistics.

If the goal is clear then there is a method. So let's meet to discuss your goal.

💻 Learn IT easily with tailor-made support! 🚀
Do you want to improve your computer skills or discover the basics to better navigate the digital world? I offer courses adapted to all levels, whether you are a beginner or looking to improve.
🌟 Why choose me?
• Adapted teaching: I explain concepts in a simple and clear manner, even for novices.
• Personalized courses: Each session is designed according to your needs and objectives.
• Hands-on learning: Immediately apply what you learn.
📘 Areas covered:
• Introduction to computers (using the computer, browsing the internet, security).
• Office software (Word, Excel, PowerPoint).
• Introduction to programming (Python, HTML/CSS).
• Basics of data management and analysis with tools like Power BI.
🕒 Flexible hours: Classes available on weekdays or weekends, depending on your schedule.
📍 Modalities: In person or online, according to your preferences.
👉 Contact me now to start your adventure in the digital world!

Master Python with Personalized Courses

Discover the art of programming with Python courses tailor-made to meet your specific needs. Whether you are a beginner, intermediate or professional, my lessons are suitable for all levels.

Why Choose My Courses?

Personalized Teaching Approach: Each course is tailored to your skill level and individual goals.

Practical Experience: Learn by doing with real-world projects that build your understanding and skills.

Ongoing Support: Get unlimited email support for any questions you have between sessions.

As a Python expert, I have a passion for teaching and sharing my knowledge. My goal is to guide you effectively in your learning journey.

Book Your First Lesson:

Start your journey to Python mastery now by booking your first lesson. Whether you aspire to enter the development field or hone your existing skills, these courses are designed for you.

Classes are face-to-face at the student's home or via webcam. You will learn computer science according to your level and what you want to learn. I am a computer science student so quite versatile. As far as programming is concerned, the possible languages are: HTML, CSS, PHP, Python, C and C++, for the network, introduction to software such as Cisco packet tracer, GNS3, vmware, virtual box. Introductory computer courses, even rudimentary ones, are possible. You will learn in a jovial and encouraging atmosphere, I have a lot of experience in the field of teaching and I am comfortable with children

Mathematics is the best way to enhance your intellect but also work on your intuition and your ability to see patterns.

Good day, my name is Alex, I have been teaching math for over 10 years to hundreds of students. I will teach all grades from elementary school all the way to high school and IB/GCSE etc.

My philosophy revolves around these three values:
-Encouragement
-Inspiration
-Discipline

I specialize into teaching mathematics and programming, but in some occasions I teach physics too.
Feel free to contact me.

Math and Computer Science Courses for Everyone 🌍

Do you want to improve your math skills or discover (or delve deeper into) the exciting world of computer science? Whether you're a student, a pupil, an adult looking to retrain, or simply curious, these courses are for you!

🔢Mathematics:

Academic support, refresher courses, exam preparation or simply wanting to improve...
➡️ Arithmetic, geometry, fractions, algebra, problem solving...
➡️ A method adapted to the level and pace of each child.

💻 Computer science:

Discover or master the essential digital tools today:
➡️ Office software (Word, Excel, PowerPoint, etc.).
➡️ Programming (Nodejs, Python, JavaScript, HTML, CSS, etc.).

There is no such thing as a weak person, nor is there a subject too difficult: everyone has their own method for learning, and each subject has its own method for being taught. Find your method, discover your own pace, and progress in your own way 🎯

Master Python / C / C++ / SQL with personalized courses

Discover the art of programming with Python / C / C++ courses tailored to your specific needs. Whether you're a beginner, intermediate, or professional, my lessons are suitable for all levels.

Why Choose My Courses?

Personalized Teaching Approach: Each course is tailored to your skill level and individual goals.

Practical Experience: Learn by doing with real-life projects that strengthen your understanding and skills.

Ongoing Support: Get unlimited email support for any questions you have between sessions.

As a Python/C/SQL expert, I have a passion for teaching and sharing my knowledge. My goal is to effectively guide you on your learning journey.

Book Your First Lesson:

Start your journey to Python/C++/SQL mastery now by booking your first lesson. Whether you're looking to break into development or hone your existing skills, these courses are designed for you.

Are you looking for a reliable and experienced Economics teacher to support your child at secondary school level in Belgium? I offer comprehensive and personalised Economics tutoring, fully aligned with the Belgian secondary school curriculum. With solid experience in secondary education, I help student s understand key economic concepts, build confidence, and achieve better academic results, whether for regular follow-up, homework support, or exam preparation.

Topics Covered – Full Secondary Economics Curriculum
• Introduction to Economics
(needs, scarcity, economic agents, decision-making)
• Market Economy and Firms
(supply and demand, price formation, production, competition)
• Money, Banking and Basic Finance
(functions of money, banks, credit, savings, inflation – secondary level)
• Labour Market and Economic Policies
(employment, unemployment, wages, role of the State)
• Household Economics and Consumption
(household budget, purchasing power, responsible consumption)
• Basics of Accounting and Management
(income and expenses, costs, basic financial management)
• Economics and Sustainable Development
• Belgian and European Economy – Key Concepts
• Economic Methodology and Exam Skills
(reading graphs, analysing texts, structuring answers)
• Applied Economics: exercises and case studies

Teaching Approach
✔ Clear and structured explanations
✔ Step-by-step progression
✔ Adapted to the student’s level and learning pace
✔ Practical exercises and real-life examples
✔ Focus on exam techniques and methodology
✔ Supportive and confidence-building environment

Learning Objectives
• Improve understanding of Economics
• Achieve better school results
• Gain confidence and autonomy
• Prepare effectively for exams
• Develop strong analytical and study skills

For Parents
I provide a serious, supportive and structured learning framework.
Regular feedback can be shared with parents regarding the student’s progress and areas for improvement.

Practical Information
• Level: Secondary school (all grades)
• Curriculum: Belgium (FWB)
• Format: Online or in-person
• Language: English or French

Good-fit Instructor Guarantee

Contact Fataou