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Trusted teacher
This teacher has a fast response time and rate, demonstrating a high quality of service to their students.
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Since November 2020
Instructor since November 2020
IB Biology, High school biology, Middle school biology
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From 37 C$ /h
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Dear students,
I am Sahar, an outstanding science teacher. Academically, I am pursuing a PhD in Biology , I have a master's degree in biotechnology and a bachelor's degree in life sciences.
Professionally and related to education, I have been working as a teacher of Sciences for approximately 6 years.
I am extremely interested in biology and I have a great passion for science, and undoubtedly I will be able to transfer my passion to you. I focus on developing your critical thinking and problem solving skills because they are the main skills in science. With me you will find Motivation rather than depression, reason rather than memorization, and we will certainly exceed the limits !
Location
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Online from Morocco
Age
Preschool children (4-6 years old)
Children (7-12 years old)
Teenagers (13-17 years old)
Adults (18-64 years old)
Seniors (65+ years old)
Student level
Beginner
Intermediate
Advanced
Duration
30 minutes
45 minutes
60 minutes
90 minutes
120 minutes
The class is taught in
English
French
Arabic
Availability of a typical week
(GMT -05:00)
New York
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Online via webcam
Mon
Tue
Wed
Thu
Fri
Sat
Sun
00-04
04-08
08-12
12-16
16-20
20-24
Welcome to our online English class! I'm Sahar, your instructor, and I'm excited to help you start your journey in learning English. In this course, we'll cover the basics of English grammar, vocabulary, and pronunciation in a fun and interactive way. Whether you're aiming to improve your speaking, reading, or writing skills, I'm here to support you every step of the way. Let's get started and make learning English an enjoyable experience!
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Learn Bioinformatics the Right Way
From theory to real data analysis.
Clear. Practical. Simple.

If you feel overwhelmed, you’re not alone. Bioinformatics can seem complex, but with the right guidance, it becomes structured, logical, and even enjoyable.

In these lessons, we break down concepts step by step and connect theory directly to hands-on practice. You won’t just memorize terms, you’ll understand how and why things work. We focus on clarity, real datasets, and practical problem-solving so you can confidently analyze biological data on your own.

Whether you're a biology student or starting research, these sessions are designed to strengthen your foundation and sharpen your analytical skills.
Read more
Show more
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Dr
Chemistry Calculations Masterclass | IGCSE & IB

### Master Chemistry Calculations and Maximize Your Exam Marks

Do you understand Chemistry theory but struggle when you face calculation questions?

Do you lose marks because of **formula selection, unit conversions, mathematical steps, significant figures, or poorly structured working**?

This masterclass is designed specifically for **IGCSE and IB Chemistry students** who want to build strong confidence in quantitative Chemistry and improve their exam performance.

I’m **Dr. Basil**, a Chemistry tutor with **10+ years of experience teaching international curricula**, including IGCSE, IB, GCSE, A-Level, and American Chemistry. With a background in Pharmacy and Quality Management, I use a systematic, step-by-step approach that helps students understand not only *how* to calculate the answer, but *why* each step is required.

### What You Will Master

**Core Quantitative Chemistry – IGCSE & IB**

• The mole concept and Avogadro's constant
• Relative atomic mass and relative formula mass
• Molar mass calculations
• Balanced equations and stoichiometric calculations
• Limiting reactants
• Percentage yield and atom economy
• Empirical and molecular formulae
• Gas volume calculations
• The ideal gas equation
• Concentration calculations
• Dilution calculations
• Titration calculations
• Reacting masses and volumes

**IB Chemistry – Additional Skills**

• Uncertainty calculations
• Percentage uncertainty and percentage error
• Significant figures and decimal places
• Data processing and evaluation
• Uncertainty in experimental results

### How We Work

Rather than simply memorizing formulas, you will learn a **repeatable method for solving Chemistry calculations**:

**Understand → Identify → Choose the equation → Substitute → Calculate → Check → Give the correct units**

We will work through progressively more challenging problems and use **IGCSE/IB-style exam questions and past papers** to develop speed, accuracy, and exam technique.

### This Masterclass Is Ideal For Students Who:

✓ Struggle with Chemistry calculations
✓ Understand the theory but cannot apply it to questions
✓ Make frequent calculation or unit-conversion errors
✓ Find stoichiometry and mole calculations difficult
✓ Need help with titration and concentration problems
✓ Want to improve their exam technique
✓ Are preparing for IGCSE or IB Chemistry exams
✓ Want structured practice and targeted feedback

### What You Can Expect

✓ Clear, step-by-step explanations
✓ Personalized instruction based on your current level
✓ Extensive calculation practice
✓ Exam-style questions and past-paper practice
✓ Identification and correction of recurring mistakes
✓ Guidance on showing working clearly to earn method marks
✓ Strategies for checking whether your answer is reasonable
✓ Focused preparation for IGCSE and IB examinations

**The goal is not simply to memorize Chemistry formulas — it is to develop the confidence and problem-solving skills to approach unfamiliar calculation questions successfully.**

Book a lesson and let's turn Chemistry calculations from a source of lost marks into one of your strongest areas.
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Poonam
Unlock your full academic potential with personalized, engaging, and effective lessons in Mathematics, Physics, Biology, Chemistry, and English. My classes are designed for students who want to not only excel in their studies but also develop a deep understanding and love for these subjects. Whether you're preparing for exams, struggling with specific concepts, or looking to advance your knowledge, this class is your gateway to success!

What You'll Get:

Tailored Learning Experience: Each lesson is customized to fit your unique learning style and academic needs. I break down complex topics into easy-to-understand concepts, ensuring you grasp the fundamentals and build a strong foundation.

Interactive and Hands-On Learning: Say goodbye to boring lectures! My classes are dynamic and interactive, filled with practical examples, problem-solving sessions, and engaging discussions that make learning enjoyable and memorable.

Comprehensive Subject Coverage: From mastering equations in Mathematics to exploring the wonders of Physics, Biology, and Chemistry, and refining your English skills, this class covers it all. You’ll gain a holistic understanding that ties together different concepts and subjects, enhancing your overall academic performance.

Continuous Support and Feedback: I’m here to support you every step of the way. You’ll receive regular feedback, personalized homework assignments, and access to additional resources to help reinforce your learning outside of class hours.

Results-Oriented Approach: My ultimate goal is your success. With a proven track record of helping students achieve higher grades and build confidence in their abilities, I’m committed to guiding you toward academic excellence.

Why This Class?

Expert Guidance: Learn from an experienced tutor who is passionate about teaching and dedicated to your success.
Engaging Content: Lessons that are not just educational, but also enjoyable and thought-provoking.
Flexible Scheduling: I understand that life can be busy, so I offer flexible scheduling options to fit your lifestyle.
Join My Class Today!

Don’t miss out on the opportunity to excel in your studies and develop a genuine love for learning. Whether you're aiming to ace your exams, overcome academic challenges, or simply explore new subjects with curiosity and enthusiasm, my class is the perfect choice for you.

Enroll now and take the first step toward a brighter academic future!
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Fairy
This chemistry tutoring course is designed to help students develop a strong understanding of chemistry, improve their problem-solving skills, and build confidence in their studies. It is suitable for students studying AP Chemistry, GCSE, IGCSE, IB, A-Level, and high school chemistry, whether they need regular academic support or focused preparation for an upcoming exam.

Lessons can cover a wide range of chemistry topics, including atomic structure, the periodic table, chemical bonding, chemical equations, stoichiometry, acids and bases, energetics, rates of reaction, equilibrium, organic chemistry, electrochemistry, and other topics based on the student's curriculum and learning needs.

Each lesson is personalized to the student's level and goals. I provide clear, step-by-step explanations and guide students through practice questions and problem-solving exercises rather than simply giving them the answers. We can work together on homework, difficult topics, past-paper questions, exam techniques, and areas where the student needs additional practice.

For exam preparation, lessons can focus on understanding key concepts, applying knowledge to different types of questions, identifying common mistakes, and developing effective strategies for answering examination questions.

Whether you are struggling with a particular chemistry topic, preparing for an examination, or simply want to strengthen your understanding and achieve better results, the lessons will be adapted to your individual needs and learning pace.

Online lessons are conducted via webcam in a supportive and interactive environment, allowing students to ask questions freely and work through problems together.
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Bader
French
The law can seem difficult: technical vocabulary, lengthy texts, demanding legal reasoning. My goal is to make it clear and accessible, in the language that suits you best: Arabic, French, or English.

This course is aimed at law students (Bachelor's, Master's), candidates for competitive exams and professionals who want to strengthen their foundations.

You will learn to :

Understanding the fundamental concepts (civil law, criminal law, business law, constitutional law, etc.)
Mastering the methodology: essay, case commentary, practical case
Use legal terminology in all three languages
Prepare effectively for your exams and competitions

Each session is tailored to your level, your program and your goals.

🇬🇧 English
Law can feel hard: technical vocabulary, long texts and demanding legal reasoning. My goal is to make it clear and accessible, in the language that suits you best: Arabic, French or English.

This course is for law students (bachelor's, master's), exam candidates and professionals who want stronger foundations.

You will learn to:

Understand core concepts (civil, criminal, business and constitutional law...)
Master legal method: essays, case comments and case studies
Use legal terminology in all three languages
Prepare effectively for your exams

Each lesson is tailored to your level, your syllabus and your goals.

🇲🇦 Arabic
قد يبدو القانون صعباً: مصطلحات تقنية، نصوص طويلة، وتفكير قانوني دقيق. هدفي هو جعله واضحاً وسهلاً، باللغة التي تناسبك: الفرنسية أو الإنجليزية.

هذا الدرس موجه لطلبة القانون (الإجازة والماستر)، والمترشحين للمباريات، والمهنيين الراغبين في تقوية معارفهم.

ستتعلم:

فهم المدني، الجنائي، قانون الأعمال، الدستوري...)
Use: الحالات العملية
استعمال المصطلحات القانونية باللغات الثلاث
التحضير الجيد للامتحانات والمباريات

كل حصة مكيفة حسب مستواك وبرنامجك وأهدافك.
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Iyanuoluwa
Are you looking for a patient, dedicated and supportive tutor who can help you understand difficult topics, improve your academic performance and build confidence in your studies? I am here to help!

I am an undergraduate tutor with 1–3 years of teaching experience, having worked with students both in Nigeria and internationally. I have also worked with the HAT Tutors team in the United Kingdom as an Assistant Tutor, where I gained valuable experience supporting students in their academic development.

I teach Mathematics, Physics, General Science, Verbal Reasoning and Non-Verbal Reasoning. I also support students preparing for examinations such as WAEC, JAMB, GCSE and other general school examinations.

My teaching approach is student-centred, structured and focused on understanding. I believe every student has the ability to improve when given the right guidance, encouragement and learning support.

During my lessons, I break down complex topics into simpler explanations, use relevant examples, provide practice questions and encourage students to ask questions freely. I also adapt my teaching methods to suit each student's learning pace, academic level and individual needs.

Whether you need help with your regular schoolwork, examination preparation, challenging topics or improving your problem-solving skills, I will work with you towards achieving your academic goals.

I offer both online and in-person lessons, providing flexibility and a comfortable learning environment.

**My goal is not just to help you pass examinations, but to help you understand what you are learning, become more confident and develop the skills to succeed independently.**

Let's make learning a rewarding experience!
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Contact Sahar
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1st lesson is backed
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Good-fit Instructor Guarantee
Similar classes
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Dr
Chemistry Calculations Masterclass | IGCSE & IB

### Master Chemistry Calculations and Maximize Your Exam Marks

Do you understand Chemistry theory but struggle when you face calculation questions?

Do you lose marks because of **formula selection, unit conversions, mathematical steps, significant figures, or poorly structured working**?

This masterclass is designed specifically for **IGCSE and IB Chemistry students** who want to build strong confidence in quantitative Chemistry and improve their exam performance.

I’m **Dr. Basil**, a Chemistry tutor with **10+ years of experience teaching international curricula**, including IGCSE, IB, GCSE, A-Level, and American Chemistry. With a background in Pharmacy and Quality Management, I use a systematic, step-by-step approach that helps students understand not only *how* to calculate the answer, but *why* each step is required.

### What You Will Master

**Core Quantitative Chemistry – IGCSE & IB**

• The mole concept and Avogadro's constant
• Relative atomic mass and relative formula mass
• Molar mass calculations
• Balanced equations and stoichiometric calculations
• Limiting reactants
• Percentage yield and atom economy
• Empirical and molecular formulae
• Gas volume calculations
• The ideal gas equation
• Concentration calculations
• Dilution calculations
• Titration calculations
• Reacting masses and volumes

**IB Chemistry – Additional Skills**

• Uncertainty calculations
• Percentage uncertainty and percentage error
• Significant figures and decimal places
• Data processing and evaluation
• Uncertainty in experimental results

### How We Work

Rather than simply memorizing formulas, you will learn a **repeatable method for solving Chemistry calculations**:

**Understand → Identify → Choose the equation → Substitute → Calculate → Check → Give the correct units**

We will work through progressively more challenging problems and use **IGCSE/IB-style exam questions and past papers** to develop speed, accuracy, and exam technique.

### This Masterclass Is Ideal For Students Who:

✓ Struggle with Chemistry calculations
✓ Understand the theory but cannot apply it to questions
✓ Make frequent calculation or unit-conversion errors
✓ Find stoichiometry and mole calculations difficult
✓ Need help with titration and concentration problems
✓ Want to improve their exam technique
✓ Are preparing for IGCSE or IB Chemistry exams
✓ Want structured practice and targeted feedback

### What You Can Expect

✓ Clear, step-by-step explanations
✓ Personalized instruction based on your current level
✓ Extensive calculation practice
✓ Exam-style questions and past-paper practice
✓ Identification and correction of recurring mistakes
✓ Guidance on showing working clearly to earn method marks
✓ Strategies for checking whether your answer is reasonable
✓ Focused preparation for IGCSE and IB examinations

**The goal is not simply to memorize Chemistry formulas — it is to develop the confidence and problem-solving skills to approach unfamiliar calculation questions successfully.**

Book a lesson and let's turn Chemistry calculations from a source of lost marks into one of your strongest areas.
verified badge
Poonam
Unlock your full academic potential with personalized, engaging, and effective lessons in Mathematics, Physics, Biology, Chemistry, and English. My classes are designed for students who want to not only excel in their studies but also develop a deep understanding and love for these subjects. Whether you're preparing for exams, struggling with specific concepts, or looking to advance your knowledge, this class is your gateway to success!

What You'll Get:

Tailored Learning Experience: Each lesson is customized to fit your unique learning style and academic needs. I break down complex topics into easy-to-understand concepts, ensuring you grasp the fundamentals and build a strong foundation.

Interactive and Hands-On Learning: Say goodbye to boring lectures! My classes are dynamic and interactive, filled with practical examples, problem-solving sessions, and engaging discussions that make learning enjoyable and memorable.

Comprehensive Subject Coverage: From mastering equations in Mathematics to exploring the wonders of Physics, Biology, and Chemistry, and refining your English skills, this class covers it all. You’ll gain a holistic understanding that ties together different concepts and subjects, enhancing your overall academic performance.

Continuous Support and Feedback: I’m here to support you every step of the way. You’ll receive regular feedback, personalized homework assignments, and access to additional resources to help reinforce your learning outside of class hours.

Results-Oriented Approach: My ultimate goal is your success. With a proven track record of helping students achieve higher grades and build confidence in their abilities, I’m committed to guiding you toward academic excellence.

Why This Class?

Expert Guidance: Learn from an experienced tutor who is passionate about teaching and dedicated to your success.
Engaging Content: Lessons that are not just educational, but also enjoyable and thought-provoking.
Flexible Scheduling: I understand that life can be busy, so I offer flexible scheduling options to fit your lifestyle.
Join My Class Today!

Don’t miss out on the opportunity to excel in your studies and develop a genuine love for learning. Whether you're aiming to ace your exams, overcome academic challenges, or simply explore new subjects with curiosity and enthusiasm, my class is the perfect choice for you.

Enroll now and take the first step toward a brighter academic future!
verified badge
Fairy
This chemistry tutoring course is designed to help students develop a strong understanding of chemistry, improve their problem-solving skills, and build confidence in their studies. It is suitable for students studying AP Chemistry, GCSE, IGCSE, IB, A-Level, and high school chemistry, whether they need regular academic support or focused preparation for an upcoming exam.

Lessons can cover a wide range of chemistry topics, including atomic structure, the periodic table, chemical bonding, chemical equations, stoichiometry, acids and bases, energetics, rates of reaction, equilibrium, organic chemistry, electrochemistry, and other topics based on the student's curriculum and learning needs.

Each lesson is personalized to the student's level and goals. I provide clear, step-by-step explanations and guide students through practice questions and problem-solving exercises rather than simply giving them the answers. We can work together on homework, difficult topics, past-paper questions, exam techniques, and areas where the student needs additional practice.

For exam preparation, lessons can focus on understanding key concepts, applying knowledge to different types of questions, identifying common mistakes, and developing effective strategies for answering examination questions.

Whether you are struggling with a particular chemistry topic, preparing for an examination, or simply want to strengthen your understanding and achieve better results, the lessons will be adapted to your individual needs and learning pace.

Online lessons are conducted via webcam in a supportive and interactive environment, allowing students to ask questions freely and work through problems together.
verified badge
Bader
French
The law can seem difficult: technical vocabulary, lengthy texts, demanding legal reasoning. My goal is to make it clear and accessible, in the language that suits you best: Arabic, French, or English.

This course is aimed at law students (Bachelor's, Master's), candidates for competitive exams and professionals who want to strengthen their foundations.

You will learn to :

Understanding the fundamental concepts (civil law, criminal law, business law, constitutional law, etc.)
Mastering the methodology: essay, case commentary, practical case
Use legal terminology in all three languages
Prepare effectively for your exams and competitions

Each session is tailored to your level, your program and your goals.

🇬🇧 English
Law can feel hard: technical vocabulary, long texts and demanding legal reasoning. My goal is to make it clear and accessible, in the language that suits you best: Arabic, French or English.

This course is for law students (bachelor's, master's), exam candidates and professionals who want stronger foundations.

You will learn to:

Understand core concepts (civil, criminal, business and constitutional law...)
Master legal method: essays, case comments and case studies
Use legal terminology in all three languages
Prepare effectively for your exams

Each lesson is tailored to your level, your syllabus and your goals.

🇲🇦 Arabic
قد يبدو القانون صعباً: مصطلحات تقنية، نصوص طويلة، وتفكير قانوني دقيق. هدفي هو جعله واضحاً وسهلاً، باللغة التي تناسبك: الفرنسية أو الإنجليزية.

هذا الدرس موجه لطلبة القانون (الإجازة والماستر)، والمترشحين للمباريات، والمهنيين الراغبين في تقوية معارفهم.

ستتعلم:

فهم المدني، الجنائي، قانون الأعمال، الدستوري...)
Use: الحالات العملية
استعمال المصطلحات القانونية باللغات الثلاث
التحضير الجيد للامتحانات والمباريات

كل حصة مكيفة حسب مستواك وبرنامجك وأهدافك.
verified badge
Iyanuoluwa
Are you looking for a patient, dedicated and supportive tutor who can help you understand difficult topics, improve your academic performance and build confidence in your studies? I am here to help!

I am an undergraduate tutor with 1–3 years of teaching experience, having worked with students both in Nigeria and internationally. I have also worked with the HAT Tutors team in the United Kingdom as an Assistant Tutor, where I gained valuable experience supporting students in their academic development.

I teach Mathematics, Physics, General Science, Verbal Reasoning and Non-Verbal Reasoning. I also support students preparing for examinations such as WAEC, JAMB, GCSE and other general school examinations.

My teaching approach is student-centred, structured and focused on understanding. I believe every student has the ability to improve when given the right guidance, encouragement and learning support.

During my lessons, I break down complex topics into simpler explanations, use relevant examples, provide practice questions and encourage students to ask questions freely. I also adapt my teaching methods to suit each student's learning pace, academic level and individual needs.

Whether you need help with your regular schoolwork, examination preparation, challenging topics or improving your problem-solving skills, I will work with you towards achieving your academic goals.

I offer both online and in-person lessons, providing flexibility and a comfortable learning environment.

**My goal is not just to help you pass examinations, but to help you understand what you are learning, become more confident and develop the skills to succeed independently.**

Let's make learning a rewarding experience!
Good-fit Instructor Guarantee
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Contact Sahar