Brasilian Portuguese, Biology and Science classes.

From 80 C$ /h

Hi!
I'm Roberta! I am graduated in Biological Sciences (Bachelor and Licentiate) at PUC MG and passionate about teaching!
Private lessons allow personalized teaching, meeting the individual demand of each student, making learning more effective and pleasurable and that is what motivates me to be here, ready to help each one to be the protagonist of their learning and overcome challenges.

Extra information

Necessary materials
Notebook, pencil, pen, book.

Location

Online from Brazil

About Me

Eu sou a Roberta, tenho 32 anos, sou de Belo Horizonte, sou formada em Ciências Biológicas, já morei na França e sou apaixonada por metodologias de ensino e jogos didáticos.

Education

Trabalho Voluntario França 2016/2018/2019
Formação complementar em Confeitaria profissional - IGA - 2014
Bacharelado e Licenciatura em Ciências Biológicas - 2012
Ensino Médio - Colégio Promove Savassi 2006

Experience / Qualifications

Vasta experiências em educação e assessoria pedagógica, participando durante toda a graduação, de projetos voltados à criação e elaboração de metodologias de ensino e jogos didáticos

Age

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

45 minutes

The class is taught in

English

French

Portuguese

Skills

Portuguese

Portuguese for adults

School

Biology

Science

Availability of a typical week

(GMT -04:00)

New York

Online via webcam

Mon

Tue

Wed

Thu

Fri

Sat

Sun

00-04

04-08

08-12

12-16

16-20

20-24

Mohamed

4.95

(22)

Physics and chemistry are fundamental subjects for success in entrance exams for prestigious universities and selective programs. A solid grasp of the concepts, combined with effective methodology, is essential for achieving good results.

I offer specialized support to prepare for entrance exams to top universities and strengthen your scientific foundations. My goal is to help you fill in any gaps in your knowledge, consolidate your existing skills, and develop rigorous scientific reasoning.

✅ Review of essential concepts in physics, chemistry and mathematics
✅ Methodology for solving exercises and time management
✅ Intensive training with exercises and exam-style questions
✅ Personalized support tailored to your level and goals

As a young researcher passionate about science, I offer you a clear and structured educational approach to help you progress effectively and succeed in your competitions.

📩 Feel free to contact me for more information.

Arno

4.95

(22)

Both Brazilian and European Portuguese. We will start with the basic grammar of the Portuguese language. Depending on the pace and experience of the student, conversation will gradually take place in Portuguese. You will receive useful and practical tips to make learning the language even more fun.

4.95

(22)

AP Chemistry Tutor – Exam Preparation & Advanced Chemistry

Are you preparing for AP Chemistry and looking for a structured tutor who can help you understand difficult concepts, master calculations, and improve your exam performance?

I’m **Dr. Basil**, a Chemistry and Science tutor with **10+ years of experience teaching international curricula**, including AP, IGCSE, GCSE, A-Level, IB, and American Chemistry. With a background in Pharmacy and extensive Chemistry teaching experience, I provide structured, personalized online lessons designed around each student's level and goals.

My approach combines **conceptual understanding + problem-solving + exam technique**, so students learn not only what to study, but how to apply their knowledge to AP-style questions.

### AP Chemistry – Key Areas

• Atomic structure and periodic trends
• Chemical bonding and molecular structure
• Intermolecular forces
• Stoichiometry and quantitative chemistry
• Thermochemistry and thermodynamics
• Chemical kinetics
• Chemical equilibrium
• Acids, bases, and buffers
• Solubility and equilibrium
• Redox reactions and electrochemistry
• Laboratory concepts and data analysis
• Experimental design and error analysis
• AP-style multiple-choice questions
• Free-response questions (FRQs)
• Exam strategies and time management

### Advanced Organic Chemistry

For students taking university-level or advanced Chemistry:

• Functional groups and nomenclature
• Reaction mechanisms
• Substitution and elimination reactions
• Addition reactions
• Isomerism and stereochemistry
• Reaction pathways
• Organic synthesis

### Advanced Inorganic Chemistry

• Periodic trends and chemical properties
• Transition-metal chemistry
• Coordination compounds
• Redox chemistry
• Inorganic reaction principles
• Industrial chemistry

### What You Can Expect

✓ Clear, step-by-step explanations
✓ Personalized lessons based on your level
✓ Extensive problem-solving practice
✓ AP-style questions and FRQs
✓ Regular assessment of progress
✓ Exam-focused strategies
✓ Support with homework and difficult topics
✓ Online lessons using an interactive teaching approach

Whether your goal is to **build a strong foundation, improve your grades, prepare for the AP Chemistry exam, or master advanced Chemistry**, I can help you develop the knowledge and problem-solving skills needed to succeed.

**Book a lesson and let's build your Chemistry skills step by step.**

Michael

4.95

(22)

Expert Science & Chemistry Tutor – IGCSE | A-Level | IB | KS3
Online & In-Person Lessons Available in Madrid.

Are you looking for a dedicated, experienced, and results-driven science tutor to help you or your child excel in school or exams? Whether you're preparing for IGCSE, A-Level, IB, or Coordinated Sciences, I’m here to help you achieve your goals.

✅ Subjects Offered:

Chemistry (IGCSE, A-Level, IB, Edexcel, AQA, Cambridge)

Coordinated Sciences (Double Award)

General Science (KS3 & KS4)

Exam preparation and lab skills (Paper 3/ practical-based support)

🧪 About Me:
I’m a qualified and passionate science teacher with over 10 years of experience teaching in international schools across Spain, the UK, and the Middle East. I currently work at a leading international school in and specialise in Chemistry and Coordinated Sciences.

🌟 What You’ll Get:

Personalized 1:1 support tailored to your learning style

Exam-focused strategies to boost confidence and grades

Simplified explanations of complex topics

Friendly, patient, and engaging lessons

Help with homework, projects, revision, and lab reports

📍 Location:

Online worldwide via Zoom/Google Meet

In-person in Madrid, flexible hours available

🎯 Who is this for?

Students aiming for top grades in science and chemistry

Those who need extra support understanding key concepts

IB or A-Level students needing help with Internal Assessments or lab work

📩 Message me today to book your first lesson or ask any questions. Let’s boost your science skills and exam success together!

Kelvin

4.95

(22)

These lessons are best for; IB, IGCSE, GCSE, EDEXCEL, CAMBRIDGE CHECKPOINT and CAMBRIDGE O'LEVELS

PHYSICS contents :
•Measuring quantities
•Weight and Mass
•Density, Mass and Volume
•Motion
•Forces
•Light and it's properties properties
•Gas Laws
•Thermal Dynamics
•Momentum
•Machines
•Waves
•Sound
•Electromagnetic Spectrum
•Electricity
•Magnetic induction
•Transformer
•Radiation

Topics to be covered in CHEMISTRY are:
•Atomic structure
•Chemical Bonding
•Electronic configuration
•The Periodic Table and the Trends
•Extraction of Metals
•Thermal Decomposition
•Oxides
•Acids Bases and Salts
•Mole concepts
•Chemical Reactions
•Chemical Energetics
•Redox Reactions
•Non Metals
•Chemistry of the Environment
•Organic Chemistry

Topics to be covered in BIOLOGY are:
•Characteristics and classification of living organisms.
•Magnification of cells
•Types of Cells
•Cells and Solution Concentrations •Reproduction in Plants
of Animals
•Genetic Recombination
•Nutrition in Animals
•Plant Nutrition
•Heredity
•Anomalies in Animals and Plants
•Excretion in Animals
•Endocrine System
•Immune System
•Nervous System
•Adaptation of living organisms on their environment
•Reproduction in Animals
•Animal feeding levels

NOTE📌
Each class session takes 60 minutes duration. Within this time, a student should have COVERED ALL the class OBJECTIVES.
All students are required to ASK QUESTIONS for CLARIFICATIONS as the lesson PROGRESSES.
AIM: To help you pass Exams with ease.

Rania

4.95

(22)

The SAT exam is one of the major steps you need to go through in your life; it's a step that is going to determine your college, your university, and your future as a whole. As with a lot of things in life, it can be a hard step, and there is no shame in asking for help. Here comes my role: I will help you overcome your problems and your difficulties. My job here is to help you achieve your desired results and unlock your potential. Simply put, we will go through every lesson, every unit, and every chapter. We will understand the concept of each lesson, with clear examples to follow. After each one, you will be tested, and after finishing your program, you will be tested on it. That's my plan for my students, so if you are interested, you can easily contact me.

Mian

4.95

(22)

This tutoring session is designed to support students in achieving a deeper understanding of their subjects through personalised guidance and engaging activities. Each lesson will focus on core concepts, problem-solving strategies, and practical applications to reinforce learning. Tailored to individual learning styles, these sessions aim to build confidence, enhance critical thinking, and foster a positive attitude toward learning. Suitable for all levels, whether you’re looking to solidify foundations or prepare for exams.

Iskander

4.95

(22)

I hold a Doctorate in Pharmacy and 2 Masters degrees from the University of Paris V René-Descartes.
Since the beginning of my higher education, and since I established myself as a freelancer after 10 years of managerial career in the pharmaceutical industry, I have been used to regularly giving private lessons to pupils and students of all levels, Primary, Secondary and Higher, supporting them until they pass their exams.
The main disciplines in which I support students are essentially scientific.
The perspectives offered are transdisciplinary.

Vincent

4.95

(22)

Science includes all natural science subjects; PHYSICS, CHEMISTRY, BIOLOGY and MATHEMATICS . PHYSICS deals with MECHANICS of OBJECTS while CHEMISTRY deals with CHEMICAL CHANGES of different REACTIONS.On the other hand BIOLOGY is the study of LIFE PROCESSES and different MATERIALS that SUPPORTS LIFE.Whereas , MATHEMATICS is a subject that explains DIFFERENT CONCEPTS using NUMBERS and VARIABLES.

Dr.Ibrahim

4.95

(22)

This course offers an integrated introduction to the core areas of science, including biology, physics, earth science, and environmental science. Students will explore scientific concepts, principles, and methods through hands-on experiments, observations, and problem-solving activities. Emphasis is placed on developing scientific literacy, critical thinking, and an understanding of the scientific method. The course encourages curiosity about the natural world and prepares students to apply scientific knowledge to everyday life and future academic study.

Tony

4.95

(22)

I graduated with a perfect 45/45 in the IB Diploma and achieved 7/7 in both Biology HL and Chemistry HL. I also have over 3 years of teaching experience.
In this class, I’ll share the strategies, techniques, and exam approaches that helped me achieve those results.
This class is focused on more than simply reviewing the syllabus. We will focus on how to approach IB science questions, apply your knowledge effectively, maximize marks, and consistently perform at a 6–7 level.

What we will focus on:
- How to approach difficult IB-style questions
- Strategies for moving from a 5 to a 6 or from a 6 to a 7
- How to understand command terms and what questions are really asking
- How to structure answers to maximize marks
- Data analysis, graphs, calculations, and experimental questions
- Common mistakes that cost students marks
- Time management and exam strategy
- Challenging 6–7 level Biology HL and Chemistry HL questions

We will work through challenging IB-style Biology and Chemistry questions step by step, focusing not only on what the correct answer is, but why the markscheme awards marks for it and how to recognize similar questions in an exam.
Whether you are currently working toward a 6, trying to push from a 6 to a 7, or simply want to become significantly stronger in IB Biology HL or Chemistry HL, this class will give you a clear and practical strategy for maximizing your exam performance.

Mohamed

4.95

(22)

Online Biology Teacher | Understand, progress, and succeed

Hello! I am a biology teacher and hold a Master's degree specializing in Management, Commerce and Distribution in the Agri-food sector, with university training in agri-food sciences and biology.

I offer online biology courses, particularly in cell biology, microbiology and biochemistry, with a simple, structured approach adapted to each student's level.

My goal is not just to help you memorize the course material: I help you understand biological mechanisms, make connections between concepts, and develop a genuine method of scientific reasoning.

🔬 What I propose:

* Clear explanations of difficult concepts
* Courses tailored to your level and objectives
* Preparation for tests and exams
* Solved exercises and practice
* Methods for learning and remembering better
* Personalized support throughout your progress
* Interactive online courses via Google Meet

Whether you need to catch up on difficulties, improve your results or simply better understand biology, we will move forward step by step, at your own pace.

📚 Biology becomes much easier when you truly understand what is happening.
Book your first session and let's see together how you can progress.

Fairy

4.95

(22)

Are you looking for a science tutor who can make difficult topics easier to understand? I provide personalized Science lessons for students who want to improve their understanding, build confidence, complete schoolwork, or prepare for exams.

I have a Bachelor’s Degree in Secondary Education major in Physical Science and several years of teaching and tutoring experience. I have taught Biology, Chemistry, Physics, Earth Science, and other General Science topics to secondary and high school students.

My lessons are student-centered and adapted to your learning level and goals. I don't simply give you the answers—I guide you through the concepts step by step so you understand why and how things work.
During our lessons, we can work on:
• Biology and life processes
• Chemistry and chemical reactions
• Physics and problem-solving
• Earth and environmental science
• Scientific concepts and terminology
• Homework and assignments
• Review and exam preparation
• Practice questions and application exercises

I use clear explanations, real-life examples, visual aids, guided practice, and questions that encourage students to think critically. If a topic seems confusing, we'll break it down into smaller and easier parts until you feel comfortable with it.

Every lesson is personalized to you. Whether you need help catching up with your classes, preparing for an upcoming examination, or simply want to become more confident in Science, I would be happy to help you reach your goals.

Hajn

4.95

(22)

What we'll work on:

-Fluency and natural conversation
-Pronunciation and clear speaking
-Grammar and vocabulary in real-life context
-Academic and Science-related English

How the class works

-A relaxed, judgment-free space where mistakes are part of learning
-Most of the class time is spent speaking, not listening
-Topics chosen around your goals, such as work, school, travel, or daily life
-Clear, kind feedback on the mistakes that matter most
R-egular progress check-ins so you can see your improvement

Who this class is for

-Teens and adults from beginner to advanced
-Shy or nervous speakers
-Students and professionals who want to improve their English for school, work, or interviews
-Learners preparing for the IELTS

In our first class, we'll chat, check your level, and set clear goals together. There's no pressure, just a friendly conversation to help you start.

Reginah

4.95

(22)

9+ years of experience helping students master Biology, Chemistry across AP, IB, A-Levels, and IGCSE Additional/Further Math.
My approach is simple and targeted: we pinpoint your specific weak areas and focus where you need help most—eliminating knowledge gaps, fixing core misconceptions, and mastering past-paper techniques to boost your grades.