IGCSE, Edexcel, Checkpoint, IB, Combined sciences Biology, Chemistry, Mathematics,

A partir de 35.98 $ /h

These courses provide students with a broad and engaging foundation in Science, covering Biology, Chemistry, and Physics. In Biology, learners investigate the structures, functions, and interactions of living organisms and their environments. Chemistry lessons focus on the composition, properties, and reactions of substances, helping students understand the building blocks of matter and the changes it undergoes. Physics explores the fundamental principles of energy, motion, and forces that shape the physical world. Through a balance of theory, practical experiments, and problem-solving activities, students develop critical thinking, analytical skills, and a deeper appreciation of how science explains and influences everyday life.

Información adicional

Punctuality by the students is highly advised, ensure to bring all necessary scientific instruments.

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Experienced Science Educator with nearly a decade of teaching Biology and Chemistry across A Level, AS Level, O Level, IGCSE, Edexcel, and IB curricula, complemented by proficiency in Physics and Mathematics. Passionate about problem-solving, scientific inquiry, and continuous learning through documentaries and research, I am dedicated to delivering high-quality education that inspires curiosity, fosters critical thinking, and drives academic excellence in students.

Formación

Bachelor’s Degree in Science Education – Kwame Nkrumah University, 2022 Certificate of Completion in Science Teaching Capital- Cambridge university press Science Practical in Blended Education – Cambridge university press

Experiencia / Calificaciones

I am an experienced educator with four years of teaching Chemistry, Biology, Physics, and Mathematics across multiple curricula, including A Level, IGCSE, Edexcel, and IB. I also lead a team of trained teachers specializing in Commercial subjects, Computer Science, and ICT, fostering a collaborative and multidisciplinary approach to learning. Committed to high-quality education, I focus on developing critical thinking, problem-solving skills, and academic excellence in all students.

Edad

Niños (7-12 años)

Adolescentes (13-17 años)

Adultos (18-64 años)

Tercera edad (65+ años)

Nivel del estudiante

Principiante

Intermedio

Avanzado

Duración

60 minutos

La clase se imparte en

inglés

Habilidades

Ciencias

Física

Química

Disponibilidad en una semana típica.

(GMT -05:00)

Nueva York

En línea vía webcam

Mon

Tue

Wed

Thu

Fri

Sat

Sun

00-04

04-08

08-12

12-16

16-20

20-24

Electrochemistry: This class introduces students to the principles of electrochemistry, focusing on redox reactions and galvanic cell.

28.79 $ /h

Lesson: Electrochemistry
Duration: 60 minutes
Grade Level: Advanced Science / Chemistry (IGCSE, A Level, IB)
Main Objectives:
By the end of this lesson, students should be able to:
1. Define electrochemistry and explain its importance.
2. Describe the difference between electrolytic and galvanic (voltaic) cells.
3. Write half-reactions and overall cell reactions.
4. Calculate standard electrode potentials and predict the direction of electron flow.
5. Understand practical applications of electrochemistry in everyday life.

Lesson Outline / Brief Notes:

1. Introduction to Electrochemistry (10 minutes)
Definition: Electrochemistry is the branch of chemistry that deals with the relationship between chemical reactions and electricity.
Key Concept: Redox reactions involve the transfer of electrons.
Real-life example: Batteries, electroplating, corrosion prevention.
2. Galvanic (Voltaic) Cells (15 minutes)
Composed of two half-cells connected by a salt bridge.
Oxidation occurs at the anode, reduction at the cathode.
Example: Daniell cell
Zn(s) | Zn2+(aq) || Cu2+(aq) | Cu(s)
Oxidation: Zn → Zn2+ + 2e−
Reduction: Cu2+ + 2e− → Cu
3. Electrolytic Cells (10 minutes)
Require an external power source to drive non-spontaneous reactions.
Example: Electrolysis of molten NaCl
At cathode: Na+ + e− → Na
At anode: 2Cl− → Cl2 + 2e-
4. Standard Electrode Potentials (10 minutes)
Electrode potential measures the tendency of a species to be reduced.
Example:
Zn2+/Zn: -0.76 V
Cu2+/Cu: +0.34 V
Predict electron flow: Electrons flow from Zn to Cu in a Daniell cell.
5. Applications of Electrochemistry (5 minutes)
Batteries (Li-ion, lead-acid)
Electroplating (silver plating, chromium plating)
Corrosion protection (galvanization)
Exercise (10 minutes)
1. Short Answer Questions:
a. Define electrochemistry.
b. Identify the anode and cathode in a zinc-copper galvanic cell.
c. Explain the difference between galvanic and electrolytic cells.
2. Calculation:
Given:
Zn2+/Zn: -0.76 V
Cu2+/Cu: +0.34 V
Calculate the standard cell potential of a Daniell cell.
3. Application Question:
Describe one practical application of electrochemistry in everyday life and explain how it works.

Enthalpy Changes in Chemical Reactions; This lesson explores how chemical reactions involve energy changes that can be exo or endothermic.

28.79 $ /h

Lesson Plan: Enthalpy Changes in Chemical Reactions
Grade/Level: Secondary / IGCSE / AS level
Duration: 60 minutes
Topic: Enthalpy Changes in Reactions
Lesson Objectives
By the end of the lesson, students should be able to:
1. Understand that chemical reactions are accompanied by enthalpy changes, which can be exothermic or endothermic.
2. Construct and interpret reaction pathway diagrams, showing enthalpy change and activation energy.
3. Define and use key terms: standard conditions (⦵), enthalpy change of reaction (ΔHr⦵), formation (ΔHf⦵), combustion (ΔHc⦵), and neutralisation (ΔHneut⦵).
Lesson Breakdown (60 minutes)
1. Introduction (5 minutes)
Begin with a real-life hook:
Ask: “Why does burning wood release heat, but dissolving ammonium nitrate in water feels cold?”
Link to lesson: These are examples of exothermic and endothermic reactions.
2. Theory: Enthalpy Changes (10 minutes)
Define enthalpy (H): The heat content of a system at constant pressure.
Define enthalpy change (ΔH): Heat energy transferred during a reaction at constant pressure.
Distinguish:
Exothermic reaction: ΔH is negative (heat released).
Endothermic reaction: ΔH is positive (heat absorbed).
Give simple examples:
Exothermic → combustion of methane.
Endothermic → thermal decomposition of calcium carbonate.
3. Reaction Pathway Diagrams (15 minutes)
Draw and explain two diagrams:
Exothermic pathway: Products lower in energy than reactants, ΔH negative.
Endothermic pathway: Products higher in energy than reactants, ΔH positive.
Introduce activation energy (Ea):Minimum energy needed for reaction to occur.
Label diagrams clearly:
Reactants → peak (activation energy) → products.
Highlight ΔH and Ea.
4. Standard Conditions and Key Enthalpy Terms (15 minutes)
Explain standard conditions (⦵):

298 K (25°C), 101 kPa pressure, substances in standard states.
Define and discuss:
Standard enthalpy change of reaction (ΔHr⦵): Heat change when reaction occurs in molar quantities under standard conditions.
Standard enthalpy of formation (ΔHf⦵): Heat change when 1 mole of compound is formed from its elements in their standard states.
Standard enthalpy of combustion (ΔHc⦵):Heat change when 1 mole of substance is completely burnt in oxygen under standard conditions.
Standard enthalpy of neutralisation (ΔHneut⦵): Heat change when an acid and alkali react to form 1 mole of water under standard conditions.
Use simple examples for each (e.g., combustion of methane, formation of H2O, neutralisation of HCl with NaOH).

5. Guided Practice / Mini Activity (10 minutes)
Students sketch their own reaction pathway diagrams (exothermic and endothermic).
Label ΔH and Ea.
Pair discussion: “Why do we still need activation energy even for exothermic reactions?”

6. Exercise (Homework / Classwork) (5 minutes)
Answer the following questions:
1. State whether each reaction is exothermic or endothermic:
a) Burning propane gas in oxygen.
b) Photosynthesis in plants.
c) Dissolving anhydrous copper(II) sulfate in water.

2. On a reaction pathway diagram:

Show ΔH and Ea for an endothermic reaction.

3. Define the following terms and give one example each:
a) Standard enthalpy of formation (ΔHf⦵)
b) Standard enthalpy of combustion (ΔHc⦵)
c) Standard enthalpy of neutralisation (ΔHneut⦵)

4. Under standard conditions, the enthalpy of combustion of methane is –890 kJ mol−1.

Ernie

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IB PROGRAM EXPERT. A levels, GCSE all subjects: math, physics, chemistry, biology, economics, SAT/ACT and more. Full time professional tutor. I have been teaching all IB subjects since 2011. I am a native English speaker and I have an engineering degree. I have been tutoring students from ASB, BFIS and BSB since 2011. I am experienced and certified in continuing education. I provide personal and individual guidance for a wide range of subject areas. I contact the teachers for each subject the student has, to ensure that the material that is being covered in the tutoring session is the exact same as that of the class. My students immediately see a noticeable improvement in their grades as the I help them to focus on time management skills as well. I focus on enhancing study skills and encourage the students to become autonomous learners that strive for academic excellence.

Raef

4.83

(12)

The math, physics, chemistry, and SVT courses of the Swiss maturity program and gymnasium or French programs are done by either in-depth explanations or by a quick course and summary of essential needs according to the case of each student supported by exercises from the book or evaluations and exams from other high schools.
Special program for Matura and Terminales.
As well as for (students in international and European Schools in English, they can have support in Math, Physics, Chemistry and Biology).
For the start of the academic year in Switzerland, support courses for EPSU and ECUS exams.
For the first university year, support courses in Mathematics - Analysis - Matrices - Statistics - Algebra - Geometry - Physics - Mechanics - Electricity - Chemistry - Organic Chemistry - Biology, Geology.
My experience is too long and for years I have learned methods for each case and for each student to fill in their gaps with the best results of Excellent, Very Good, and Good as mentioned by my students.
I can also help students to better prepare for courses and support them to better prepare for the duties of CNED in science subjects.
Guaranteed response within minutes up to 10 hours maximum.

Matías

4.83

(12)

Do you aspire to master mathematics, physics and engineering at a university level? Do you want to exceed your limits and excel in these demanding fields? Do not search anymore ! Our tailor-made private lessons are there for you.

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Excellence doesn't wait. Contact us now to book your first lesson. Together we will build a bright future based on a solid understanding of mathematics, physics and engineering.

Marc

4.83

(12)

Graduated in mathematics and physics, I offer my help to students who encounter difficulties in these two subjects. My approach is to review with them the key points of the lessons and to assist them in their homework, whether at home or through online sessions via webcam.
Do not hesitate to contact me for a first request; I usually respond within 24 hours.
My goal is to help the student understand his course and his exercises, and to guide him on the right path so that he can succeed in his school or university year. I support students of all levels, from 14 years old to the second year of university, in the fields of science, economics or any other field where courses in mathematics, statistics, computer science and physics are exempted.
Classes can be given at home (with a price including the class and travel expenses) or by webcam (with a specific price for the online course).
For rehearsal sessions, I generally recommend between 1 and 2 hours per week, and up to 10 hours per week for intensive review and refresher courses.

Alonso

4.83

(12)

I am a Full Professor of Mechanical Engineering with 30 years of experience in areas such as Strength of Materials, Stability, Physics (Kinematics and Dynamics), Statics, Elasticity, Solid Mechanics, Machine Elements, Stress Analysis, Structures and Advanced Materials Mechanics . I emphasize teaching through problem solving and practical applications.
The Strength of Materials classes include topics such as: Stress analysis. Axial load, bending, Torsion, Transverse load, Combined stresses, Stress transformation, Energy methods, Calculation of deflections in beams, statically indeterminate problems, buckling, shear center, compound bending and asymmetric bending, Castigliano's theorem, Mohr's method , Virtual work, Creep and Fracture Criteria, etc.

Constanza

4.83

(12)

If you're looking for an organised and professional teacher to help you achieve your academic goals, look no further! The IB science subjects can be extremely difficult to go through on your own, and I'll be glad to use my experience to help you out.

A couple of things I like to do:

- Initial test or interview to assess your level.
- Use Notion as a platform to share all my resources.
- Use mock papers that lay out the exercises JUST like in the real exams, so you will feel really prepared.
- I give homework when appropriate.
- I provide any kind of mentoring and college counseling. People who study Biology and Chemistry usually want to pursue a clinical career-- and that is a complex process!

Patricia

4.83

(12)

I am miss Patricia, I am native, French-speaking (🇫🇷) having as an activity outside of my studies tutoring. I teach the French language (FLE) and the English language (ESL). I also have skills to teach learners to repeat in math (📐📏✏🔢), chemistry (👩‍🔬🧑‍🔬🧪📗), biology 🫁🫀🦷🥼🔬 (and/or natural sciences 🌏🍀🪰🪱🦠 🥽), French (🇫🇷) and English (🇬🇧).
If you are a parent and you are actively looking for a tutor to supervise your children (help with homework or rehearsals), I am at your disposal. Having a great experience that I acquired by babysitting and serving in youth groups, I was able to immerse myself in the psychology of young people and children and I have this ability to touch their difficulties. . Learning is not the army or a chore, in addition to being an excellent tutor for them, I can also be this benevolent company that will allow them to unleash their potential.
My announcement concerns learners of the French-speaking system (French, Belgian, Canadian) and the bilingual system (French, English).
Through the first course, I would highlight my skills mentioned above and if you are won over, we can continue together.

Level concerned by my ad:

- primary level (any subject)

- middle school level (English, French, mathematics), biology (and/or natural sciences), chemistry

- high school level (English, biology)

If you are interested in this ad, comment with a plus, or write me a private message and together let's make your children better at school.

Miss Patricia,

Enrique

4.83

(12)

Don't settle for anything less than excellence.
I am an Aerospace Engineer with a Master's degree in Quantum Physics and have completed Ph.D. work at the University of Cambridge in Computational Physics. Additionally, I have 4 years of experience developing MATLAB and possess deep programming skills in MATLAB/Simulink family, C/C++, Fortran, and Python.

With over 12 years of tutoring experience, I have successfully guided more than 50 students worldwide to achieve distinction in various fields. Consistent results are my priority, and I strive for excellence in all aspects of my teaching.

My lessons are customized to meet each student's unique needs and are designed to be engaging and insightful.

Whether you are at a school level or require advanced or professional-level instruction, I offer support in the following areas:
- Preparation for IB/IA, A-Levels, GCSE, University Entry, or equivalent.
- Experience in preparing students to access world-class schools and universities, including Cambridge University, Oxford, Ivy League and other top institutions in the UK and US.
- University levels (undergraduate and postgraduate).
- High school studies and diploma programs.
- Assistance with specific projects at a professional level, including job interview preparation.
- Extensive experience working with children.

Every lesson is meticulously planned in advance to ensure that it aligns with your goals and targets areas for improvement.
I prioritize a dynamic and interactive learning experience, with one-on-one sessions tailored to your individual requirements. Lessons will be conducted via webcam, enabling you to connect from anywhere.

I have a highly flexible schedule and can adapt to accommodate your needs.
If you have any questions about my teaching method, availability, or pricing, please don't hesitate to reach out. I am here to assist you and provide the support you need.

Nicolas

4.83

(12)

As a current Master's student in Aerospace Engineering at TU Delft, I have successfully navigated the entire Bachelor's curriculum and the competitive selection procedure, so I am fully equipped to guide you through the study plan and specific admission requirements. I offer personalized tutoring sessions designed to ensure comprehensive preparation for the entrance exams. These classes include a detailed review of key concepts in Mathematics and Physics, intensive practice with relevant exercises, and specific strategies to tackle the test effectively. I also place a dedicated focus on mastering the First Year Material (FYM) section (often the most challenging and unfamiliar part for applicants) to help you build the confidence and skills necessary to succeed. Furthermore, I am happy to discuss the degree program itself and explore the opportunities available in Delft to help you prepare for your future student life.

Marcos

4.83

(12)

80% of my students got accepted in the 2025 exam, I am sure I can help you out in the 2026 exam!

TU Delft is Europe's most prestigious university for aerospace studies, preparing some of the best engineers. However the selection procedure is tough and demanding, and only those prepared have a chance to succeed.

As a TU Delft student, I know from first hand how stressfull this process is, and can therefore help you succeed in the preparation of these exams. I have previous experience as a tutor back in high school, helping students improve their grades from Cs to As.

Moreover, I have an extensive knowledge on the subjects tested on these exams, having taken them myself, completed the courses at university with excellent grades and teaching over 10 students for the entrance exam.

Throughout the class, I will use a presentation to explain the main concepts of each exam (Maths, Physics and Aerospace Engineering), focusing on those subjects the student is struggling with most. After this, I will help the student complete some practice excercises, and then assign extra practice to complete on their own time. These exercises will then be reviewed in the following class to ensure the topics have been understood.

I am looking forward to help you in your journey as an aerospace engineer!

Mauricio

4.83

(12)

Clases personalizadas para explicación de un tema, resolución de trabajos prácticos y preparación de exámenes. Las clases se ajustan a tu demanda. Trabajamos con tableta gráfica para exportar el contenido de la clase como PDF. Además, contamos con el uso de diversos software si fueran necesarios, como: Geogebra, Excel, R, Python. No pierdas esta oportunidad para reforzar tus conocimientos.

Sebastián

4.83

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Do you want to learn chemistry? Do you find it difficult and think the subject is impossible?
In the following Chemistry classes, you'll learn from the basics and progress until you fully understand the subject. I'll teach you using techniques and strategies that make the subject easy, simple, and fun for you, so you'll enjoy the time we spend learning.
Like you, I'm young and I understand the difficulties involved in studying a subject like Chemistry. However, I've found methods and ways for you to learn from the most basic to the most advanced, and believe me, you'll learn a lot.

Miriam

4.83

(12)

I offer private tutoring for ESO and Bachillerato students in the Science or Health Sciences track (and applied mathematics for Social Sciences or Humanities), including languages: English and French.

• In-person mobility:
- North Leganés
- Burnt Zarzaquemada
- The Holm Oak

• Online or at my home
- Any

Eryk

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En este curso aprenderás a diseñar, ejecutar y automatizar pruebas de software aplicando las mejores prácticas de Quality Assurance (QA) utilizadas en proyectos reales de la industria.

Comenzaremos desde los fundamentos del testing de aplicaciones, entendiendo el rol del QA en el ciclo de vida del software, los tipos de pruebas y la correcta definición de casos de prueba. Luego avanzaremos hacia la automatización de pruebas mediante scripts, abordando conceptos clave como pruebas funcionales, regresión, validación de APIs y ejecución automatizada.

Deysi

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Soy Deysi, Microbióloga recibida en UNRC, tengo más de 12 años de experiencia en el dictado de clases particulares de química general, química orgánica, química inorgánica, química analítica, biología, microbiología, biologia celular, genetica, matematicas entre otras materias de ciencias naturales. Tanto en Nivel secundario como universitario.
Mi método de enseñanza es trabajar el entendimiento del material teórico para poder luego, realizar ejercicios de las guías prácticas (si así se requiriera), ayudando al alumno a interpretar y relacionar contenidos, mediante cuadros sinópticos, resumiendo la información importante, haciendo auto-evaluaciones.
Siempre enfocándome en el mejor método de aprendizaje para cada uno.
Las clases son específicas y se ven los contenidos de cada materia.
También preparo alumnos para rendir exámenes parciales, finales, ingresos a carrera y materias previas (con el material correspondiente, completo)
Puede ser vía online (trabajo con pizarrón) o presencial en mi casa, zona macrocentro de Río Cuarto. Los horarios son flexibles según la disponibilidad y coordinación con el alumno de lunes a viernes. Las clases pueden ser individuales o grupales según prefiera cada uno de los alumnos.
¡Que no te sorprendan los exámenes, Preparate con tiempo y aproba todas tus materias!