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Joshua
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This teacher has a fast response time and rate, demonstrating a high quality of service to their students.
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Since February 2023
Instructor since February 2023
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Learn chemistry in a fun and safe environment! !
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From 48 C$ /h
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In this chemistry lesson, we will introduce you to the basic concepts and principles of chemistry. We begin with an introduction to atoms, molecules, and ions, and how these chemical components link together to form chemical compounds. Next, we'll look at chemical reactions and how they work. We will also discuss major groups of elements, such as metals, non-metals and noble gases, as well as their properties and uses. By the end of this lesson, students will have a solid understanding of the basics of chemistry and its applications in our daily lives and industry.
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At teacher's location :
  • Almere, Netherlands
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Online from Netherlands
About Me
Hey! Ik ben een basketbalspeler die op hoog niveau speelt en een passie heeft voor wetenschap en technologie. Ik heb twee jaar chemie gestudeerd aan Inholland en momenteel studeer ik ICT. Het is geweldig om mijn kennis te delen en anderen te helpen het plezier in het leren te ontdekken. Ik ben ervan overtuigd dat het leren van nieuwe dingen leuk en veilig kan zijn.

Als leraar vind ik het belangrijk om les te geven op een leuke en begrijpelijke manier. Ik gebruik mijn empathische aanpak om complexe concepten eenvoudig uit te leggen, en mijn geduldige houding helpt studenten om zelfverzekerd te worden in hun kennis. Ik begrijp dat iedereen anders leert en daarom pas ik mijn onderwijsstijl aan op de behoeften van mijn studenten.

Als basketbalspeler weet ik dat teamwork en doorzettingsvermogen belangrijk zijn voor succes. Ik breng deze waarden ook over op mijn studenten, omdat ik geloof dat deze vaardigheden ook essentieel zijn voor succes in het leven. Ik vind het geweldig om mijn passie voor basketbal te combineren met mijn liefde voor wetenschap en technologie en ik ben trots om anderen te inspireren om te leren en te groeien.

Kortom, als je op zoek bent naar een leuke en begrijpelijke manier om te leren, dan ben je bij mij aan het juiste adres! Ik ben een gepassioneerde
Education
Ik heb een brede opleiding gevolgd met vakken op het gebied van chemie en ICT. Tijdens mijn chemiestudie heb ik vakken gevolgd op het gebied van organische chemie en biotechnologie, en heb ik uitgebreide praktijkervaring opgedaan. Ik was gepassioneerd over deze vakken en heb daarom de meeste vakken hoog afgerond, met goede cijfers en een propedeuse op zak.

Momenteel studeer ik ICT en leer ik programmeertalen zoals Python, Java, PHP, HTML, CSS en MySQL. Deze vakken fascineren me omdat ze de basis vormen van veel moderne technologieën en ik vind het leuk om te zien hoe ik deze talen kan toepassen om software, apps en websites te ontwikkelen. Ik vind het ook geweldig om te zien hoe ik mijn kritische en probleemoplossende denkvaardigheden kan verbeteren door deze vakken te bestuderen.
Experience / Qualifications
Tijdens mijn studie chemie heb ik veel geleerd over organische chemie en biotechnologie, en ik heb ook uitgebreide praktijkervaring opgedaan. Het was geweldig om te ontdekken hoe chemie de basis vormt voor veel van de dagelijkse producten en technologieën die we gebruiken. Ik was vooral gefascineerd door de manier waarop chemie wordt gebruikt om nieuwe medicijnen en behandelingen te ontwikkelen die mensenlevens kunnen redden.

Na mijn tijd bij chemie, ben ik begonnen met mijn ICT studie. Momenteel leer ik Python, Java, PHP, HTML, CSS en MySQL. Het is fantastisch om te ontdekken hoe deze talen gebruikt worden om websites, software en apps te maken die ons dagelijks leven gemakkelijker maken. Het leren van deze programmeertalen heeft me ook geholpen om kritisch en probleemoplossend te denken, wat ik kan toepassen op allerlei andere gebieden in mijn leven.

Door deze verschillende studies te volgen, heb ik een breed scala aan kennis en vaardigheden ontwikkeld die ik kan toepassen in mijn toekomstige carrière. Ik ben opgewonden om te zien hoe ik deze vaardigheden kan gebruiken om anderen te helpen en om bij te dragen aan de voortdurende vooruitgang van de wetenschap en technologie.
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
60 minutes
The class is taught in
English
Dutch
Skills
Availability of a typical week
(GMT -04:00)
New York
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At teacher's location and via webcam
Mon
Tue
Wed
Thu
Fri
Sat
Sun
00-04
04-08
08-12
12-16
16-20
20-24
Learn to program with fun and current projects!
35 C$ /h
In this lesson we will be introduced to the fundamental concepts of programming in MySQL, Java and PHP. We'll start with MySQL and cover the basics of database technology, such as creating, reading, updating, and deleting data in a database. Then we'll move on to Java, where we'll discuss syntax, data structures, and control structures. Finally, we will discuss PHP, focusing on web programming and using PHP in conjunction with MySQL databases. By the end of this lesson, students will have a solid understanding of the fundamental concepts of programming in MySQL, Java, and PHP and how these technologies work together to create powerful web applications.
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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.
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Supportive and patient: All levels are welcome, from students who are struggling to those aiming for top grades.

Who I can help
Students who find Biology or Chemistry difficult and want to build confidence
IB and A-Level students aiming for top grades
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Book a trial lesson. Message me with your level, subject, exam board and goals, and we will plan your first lesson together. I look forward to helping you succeed.

Location of the Lessons: Live, interactive, and high-quality sessions delivered online—learn from home in the Netherlands or anywhere worldwide, Face to face- at your home or at my place.
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Description of the lesson
I provide personal tutoring to high school students and help students truly understand difficult subjects. I explain the material calmly and clearly, tailor my explanation to the student, and practice together until the material is mastered.

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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.
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Hello, I'm Pratibha, a PhD-qualified Biology and Chemistry tutor based in the Netherlands.

I have more than 10 years of teaching experience at secondary and university level. I help students understand Biology, Biochemistry, Biotechnology, Pharmacology and Chemistry, so they can do well in exams and feel confident in the subject. I teach online, and students from the Netherlands, Europe and the rest of the world are welcome.

What I teach
Secondary and pre-university: Biology and Chemistry for IB, A-Level, IGCSE, AP and other international curricula
University: Biochemistry, Molecular Biology, Immunology, Genetics, Microbiology, Zoology and Biotechnology, all the five branches of Chemistry
Exam preparation: past papers, exam technique, revision plans and last-minute support
Homework and coursework help: including lab reports, essays and internal assessments

About my background
PhD in Zoology, MSc in Biotechnology (Core subject- Chemistry) and MSc in Zoology (Gold Medalist)
Former Assistant Professor, with experience teaching both school and university students
Published researcher in preclinical pharmacology, with a recent poster presentation at AIBIA2025 in Utrecht
Experience guiding student research projects and designing lab activities that link practical work to theory
Fluent in English, with working knowledge of French and native-level Hindi

How my lessons work
Concepts first: I explain the "why" behind each topic, so you are not just memorising.
Tailored to you: Every student starts with a short chat about their level, goals and syllabus, and I build the lessons from there.
Interactive: I use diagrams, worked examples, practice questions and digital materials, and I give clear feedback after each lesson.
Exam-focused: We practise how to read questions, structure answers and manage time under pressure.
Supportive and patient: All levels are welcome, from students who are struggling to those aiming for top grades.

Who I can help
Students who find Biology or Chemistry difficult and want to build confidence
IB and A-Level students aiming for top grades
University students who need help with Biochemistry, Molecular Biology or Immunology
Students who need help with revision, past papers or coursework

Book a trial lesson. Message me with your level, subject, exam board and goals, and we will plan your first lesson together. I look forward to helping you succeed.

Location of the Lessons: Live, interactive, and high-quality sessions delivered online—learn from home in the Netherlands or anywhere worldwide, Face to face- at your home or at my place.
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Joris
Description of the lesson
I provide personal tutoring to high school students and help students truly understand difficult subjects. I explain the material calmly and clearly, tailor my explanation to the student, and practice together until the material is mastered.

I have experience tutoring students whose grades have improved from approximately a 4–5 to a 7–8. We can work on understanding the subject matter, homework, test preparation, and catching up.

The lessons are suitable for students who need extra explanation, but also for students who want to further improve their grades.
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