How the body's systems work to meet the needs of living organisms - Fourth Grade - First Semester

Translated by GoogleSee original

From 33.94 $ /h

How do the body's systems work together?
- The digestive system: It digests food and converts it into simple nutrients (glucose, amino acids, fatty acids) that reach the blood to nourish the cells.
- The respiratory system: Oxygen enters the body and carbon dioxide exits, ensuring the continuation of cellular respiration within the cells.
- The circulatory system (heart and blood vessels): It transports food and oxygen to all parts of the body, and removes waste products such as carbon dioxide and urea.
- The excretory system (kidneys and skin): gets rid of waste products resulting from vital processes such as urine and sweat, in order to maintain the body's internal balance.
- The nervous system: It regulates the functioning of different organs and sends signals to control movement and respond to external stimuli.
- Muscular and skeletal system: Provides movement and support for the body, and helps protect internal organs.
- The immune system: It defends the body against microbes and foreign substances, thus maintaining health.
Summary
Each system has a specific function, but the integration of these systems is what ensures human survival. Digestion provides food, respiration provides oxygen, blood circulation delivers both to the cells, excretion removes waste, and the nervous system coordinates all of this.

Extra information

Bring your notebook, pen, and computer for the subject.

Location

Online from Egypt

About Me

Dr. Hadeer Habka, Science School, follows the same principle as us 💪🏻♥️ She explains integrated science (physics, chemistry, biology) for all levels (secondary, preparatory, and primary) ✅ Recitation after each lesson ✅ Exams and monitoring of student progress ✅ Continuous review ✅ Comprehensive exams with each unit, and I guarantee you the highest grade in integrated science 😊💯

Education

Bachelor of Science and Education
Helwan University
Very good grade with honors
Master's in Curriculum and Methods of Teaching Science
She has completed numerous Egyptian and international courses and certifications.

Experience / Qualifications

7 years of experience teaching the integrated science curriculum for all grade levels
(Secondary - Preparatory - Primary)
Explaining and simplifying the curriculum, conducting comprehensive reviews, and administering exams on an ongoing basis.

🌟 Are you looking for a fun way to understand science?
I am Dr. Hadeer Habka, a teacher of the integrated science curriculum for all educational levels, with experience in teaching and laboratories, and with a style that makes science an exciting adventure!

🔬 Why did you choose me?
- By explaining science in a story-based and interactive way that makes the student love the subject.
- I make every scientific experiment a fun moment of discovery
I use visual aids and educational games suitable for each age group.
I have experience in simplifying complex concepts for children and teenagers.
- And I like to incorporate Egyptian heritage into the explanation in an innovative way (like the pharaohs and ancient scientific wonders!)

🎯 The stages I work with:
From elementary to high school, with methods that suit each age group.

📚 The lessons could be:
Online or in person
Individuals or small groups
- Includes explanations, applications, and interactive questions

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

French

Arabic

Skills

Science

Tutoring

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

Microbes - First Preparatory Grade - First Semester

50.91 $ /h

What are microbes?
Microbes are microscopic organisms that cannot be seen with the naked eye; some are beneficial and some are harmful.
- They are found in the air, water, soil, and on the bodies of living organisms.

🔬 Types of microbes
Viruses: The smallest living organisms, they cause diseases such as influenza and AIDS.
- Bacteria: Some are beneficial (such as yogurt bacteria), and some are harmful (such as typhoid bacteria).
- Fungi: such as yeast used in bread making, including harmful ones like a fungus that causes skin diseases.
- Protozoa: such as amoebas that cause dysentery.

🌍 Where it is found
- In the soil, water, and air.
- Inside the bodies of living organisms and on their surface.

✅ Benefits of microbes
- Production of some medicines, such as penicillin, from fungi.
- Manufacturing foods such as yogurt and cheese using beneficial bacteria.
- Analysis of organic matter and restoration of elements to the soil.

⚠️ The dangers of microbes
- It causes serious diseases such as: typhoid, dysentery, influenza.
Food spoils when it grows on it.

🛡️ Ways to prevent microbes
- Wash your hands thoroughly before and after eating.
- Keep food in the refrigerator.
- Boil or sterilize the water before drinking.
- Getting vaccinated against diseases

Mitosis and Meiosis - Third Preparatory Grade - First Semester

50.91 $ /h

First: Mitosis

✳️ Definition:
It is a cell division that occurs in somatic cells (such as skin and muscle cells), and its purpose is growth and replacement of damaged cells.

🔁 Result:
This results in two perfectly identical cells, each with the same number of chromosomes (46 in humans).

📘 Its importance:
Growth
- Tissue regeneration
Wound healing

🧠 Stages of mitosis:
1. Prophase: Chromosomes begin to appear
2. Metaphase: The chromosomes are aligned in the middle of the cell.
3. Anaphase: The chromosomes separate and move to the ends.
4. Final: Two new nuclei are formed

---

🧪 Second: Meiosis

✳️ Definition:
It is a division that occurs in reproductive cells (eggs and sperm), and its purpose is to reduce the number of chromosomes by half in preparation for reproduction.

🔁 Result:
This results in four asymmetrical cells, each containing half the number of chromosomes (23 in humans).

📘 Its importance:
- Production of reproductive cells
Maintaining a constant number of chromosomes in living organisms
- Increase genetic diversity among individuals

🧠 Stages of meiosis:
It consists of two successive divisions:
First division: Reduction in the number of chromosomes
- Second division: Similar to mitosis, to form 4 cells

Jonathan

4.59

(86)

My name is Jonathan. I am a young teacher with already 15 years of experience in the field of academic support for primary and secondary school children up to rhetoric.

I also provide individual monitoring for your work method, more particularly in terms of understanding the instructions and the work schedule. If you need a helping hand, I'm here to listen.

Benoit

4.59

(86)

I am a qualified and experienced mathematics tutor. Graduated from the Free University of Brussels in 2011, I started my career by teaching remedial courses in different schools in Brussels. I then specialized in individual academic support by following educational training at the Harvard Graduate School of Education. I have been giving private mathematics lessons daily for over ten years.

The students who follow my private lessons benefit from personalized support. The first session is devoted to an in-depth assessment of the student's mathematical knowledge. The objective is to detect its weak points and understand their origin in order to adapt my courses to its needs. I develop a tailor-made remediation program for each of my students aimed at filling each of their gaps. Over the course of the sessions, the student builds a solid foundation for learning and regains self-confidence. At the same time, I help him acquire a work methodology that allows him to gradually become autonomous in his studies.

I have a thorough knowledge of the mathematics curriculum for middle and high school (from 6th to 12th grade). I am also qualified to support students in preparing for international exams such as the SAT, the OMPT, and the International Baccalaureate (IB) in all its variations: Analysis and Approaches (AA SL/HL) and Applications and Interpretation (AI SL/HL).

Throughout my years of training, I studied and developed numerous techniques that facilitate learning mathematics. The strength of my teaching approach lies in my ability to explain, in simple terms, anything a student finds complicated. I am passionate about this profession because it offers me the opportunity to guide struggling students toward success. It is a true pleasure to see them progress and rediscover their connection with the fascinating world of mathematics.

I offer private tutoring in Paris (at the student's home) or remotely (online). My online lessons take place on an interactive whiteboard. This whiteboard is specifically designed to facilitate student/teacher interaction online. Thanks to this teaching tool, my online lessons are just as effective as in-person lessons. The student only needs an internet connection and a computer, tablet, or smartphone to participate.

Bibek

4.59

(86)

Hi! I am a Ph.D. researcher in Physics at the University of Cologne, Germany. Recently, I graduated from the University of Groningen in the Netherlands with a Master's degree in Nanoscience (w/ cum Laude). I offer private tutoring for high school and/or university-level students so they can understand the fundamental concepts and excel in their studies. I have teaching experience of 5+ years in Physics and Mathematics to both high school and university-level students.

I have expertise in the following courses:
0. All high school topics

1. Classical Physics (Newtonian mechanics, linear motion, rotational motion, collision theory, angular momentum, and many more)

2. Modern Physics (Electrostatics, Maxwell's law, motion of electrons in electric and magnetic fields, Quantum theory of light, Compton scattering, photoelectric effect, and many more)

3. Optics (Ray optics, wave mechanics, reflection and refraction, Fresnel's law, polarizer, matrix optics, interference, diffraction, and many more)

4. Quantum Mechanics (Schrödinger equation, Heisenberg uncertainty principle, commutation relation, the addition of angular momentum, matrix representation, density matrix, and many more)

5. Solid-state Physics (Crystal structure, wave diffraction, and the reciprocal lattice, crystal vibrations (phonons), the density of states, semiconductor physics, pn junction, transistors, and many more)

*Note that the sessions will be held online (via Discord/Zoom/Microsoft Teams).

Arno

4.59

(86)

Since the Gymnasium I give tutoring Mathematics, Physics, Chemistry, Latin and language courses Latin languages Portuguese Spanish French and Italian from basic or beginner level to Gymnasium level. For primary school students also arithmetic for example with fractions and percentages and all other modules. Also Dutch grammar and spelling.

Lucía

4.59

(86)

Hi! Do you love Korean culture, food, music, or dramas? Would you like to learn Korean but don't know where to start? Are you planning a trip to Korea? I'm a Korean teacher with international academic training and several years of experience teaching students of all levels and with diverse goals. I've been teaching online Korean and Spanish classes for over five years. If you're afraid to speak because you feel you don't have a solid foundation or you're intimidated by all the cartoons, I completely understand: I've been there too! I'll help you take your first steps in the language with confidence and without fear of making mistakes. 😊

🎓 About me
- PhD in linguistics applied to language teaching
- Master's degree in International Education and Bilingualism.
- Graduated in East Asian Studies (specializing in Korea).
- Korean language and literature studies at Seoul University.
- Official language teaching qualification.
- Korean family, which allows me to teach you the language along with the real culture and natural expressions.
- More than 2 years living in Korea (university exchange and intensive TOPIK 3–5 language program).

👩‍🏫 Teaching experience
- Language teacher with international experience.
- Years teaching Korean to beginner students and East Asian degree students
- Clear, communicative methodology adapted to your pace.

📚 My classes
✔ Customized according to your objectives (TOPIK, conversation, travel, culture, leisure).
✔ Simple and structured explanations
✔ Material included.
✔ Friendly and motivating environment.
✔ Continuous monitoring and feedback.

💻 Modality
Online or in-person classes.

⭐ Ideal for you if you want:

Start from scratch without stress.
Improve your speaking and real comprehension.
Prepare for TOPIKE I
Understanding Korean culture in addition to the language.

📩 Contact me and we'll design your personalized learning plan. Learning Korean can be fun, effective, and motivating!

Kyra

4.59

(86)

I can help with any aspect of the English Language and English Literature GCSE examination preparation. I achieved A* grades in both, and have a First-Class degree in English from Oxford University.

I can tailor my lessons to a particular syllabus or text, and I am flexible in the format and delivery of these lessons. I have experience tutoring young people and teenagers and have a great success rate in helping students progress.

Lilia

4.59

(86)

Primary school teacher, I give tutoring lessons for all levels
I am a CE2 class teacher and a FLE (French as a foreign language) teacher in training centers.
I have a certification in FLE and 2 masters and a master in teaching in progress
I use fun and interactive methods
I currently provide personalized tutoring for primary and secondary school students in all subjects.

I offer sessions adapted to the needs and pace of each student

Methodology:
- Initial assessment: For each support I will do a diagnostic assessment to identify the student's strengths and weaknesses in the subject concerned (mathematics, French, science, etc.).
- Personalized approach: The courses are adapted to the student's level, with individualized monitoring. This includes practical exercises, targeted revisions and explanations adapted to each learning pace.
- Progressive objectives: we set short and long term objectives together to motivate the student.
- Learning techniques: I use interactive methods (online exercises, educational games) and revision sheets to help memorize and understand key concepts (flashcards, etc.)

Type of sessions:
- Course of the sessions:
- Review of previous concepts: 10-15 minutes to review the points covered during the last lesson.
- Lesson of the day: 30-45 minutes to present and explain a new concept.
- Practical exercises: 20-30 minutes to apply what has been learned, offering exercises adapted to the student's level.
- Questions and corrections: 10-15 minutes at the end to answer the student's questions and correct mistakes together.
- Regular monitoring: I plan regular assessments to adjust the learning method and adapt the pace of the lessons.

So what are you waiting for? Join me for an unforgettable adventure!

Dr.Ibrahim

4.59

(86)

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.

Nazlı

4.59

(86)

Hello everyone! I’m Nazlı, a native Turkish teacher from Istanbul, Türkiye.
I have over seven years of experience teaching Turkish to foreigners of all ages and levels.
Currently, I’m completing my master’s degree in Turkish Language Teaching and conducting academic research on modern methods that combine technology, artificial intelligence, and cognitive science to make learning more effective and enjoyable.

💬 My Teaching Style

I believe every student learns differently, so my lessons are personalized for your goals and interests.

✨ If your goal is to speak Turkish confidently, we’ll focus on real-life conversations and pronunciation.
✨ If you prefer grammar and structured learning, I’ll make complex topics simple and practical.
✨ If you want a balanced approach, we’ll mix speaking, listening, reading, and writing activities.

My students often describe me as patient, friendly, and supportive.
I always make sure our lessons are interactive, relaxed, and motivating — learning Turkish should be enjoyable! 🌸

📘 What You’ll Experience in Our Lessons

In the first lesson, we’ll:

1. Complete a short Language Goals & Objectives Form to understand your learning style and aims.
2. Do a level test (if necessary).
3. Start your personalized Turkish learning plan!

I mainly use an interactive smart book and share 100+ learning resources through Google Classroom, including:

- PDF books and worksheets
- Online exercises, games, and quizzes
- Audiobooks, stories, and short films
- Homework and extra practice after each lesson
And many more...

These materials make it easy to learn and practice Turkish anytime — even outside class!

🌟 Ready to Start?

If you want to learn Turkish online, improve your speaking skills, or build a strong grammar foundation, I’ll be happy to guide you step by step.

Book a lesson today and let’s start your Turkish learning journey together.
I can’t wait to meet you! 😊🇹🇷

Dirisha

4.59

(86)

Join engaging online English lessons designed to build your confidence in speaking, reading, writing, and grammar. My classes are supportive, interactive, and tailored to your goals — whether for school, work, travel, or everyday conversation.

✨ All ages and levels welcome
✨ Relaxed learning environment
✨ Practical conversation practice
✨ Flexible online sessions

Let’s make learning English enjoyable and successful — message me to get started!

Joana

4.59

(86)

Hola,
¿cómo estás?☺️
My name is Joana. I am a native Spanish teacher, with a degree in Spanish Literature and Language and a Master's degree in Spanish as a foreign language (UNED Faculty).
■ Since 2009 I have been working at the Cervantes Institute as an OFFICIAL EXAMINER of DELE diplomas (Diploma in Spanish as a Foreign Language)
(I am fluent in French, so during the course I give all the necessary explanations in French on grammatical rules or vocabulary.
Having extensive teaching experience, I prepare students/adults for all levels of the DELE Spanish Diplomas and for all official Spanish exams within Universities.
● Spanish courses for adults who intend to travel or live in a Spanish-speaking country.
● Specialized fun Spanish courses for children (6-13 years old), audiovisual material, interactive games on the internet, choice of textbooks taking into account their age. Children learn the language through experiences and experiences while having fun.
● Help with school homework/exams for French students (all levels, + preparation for BTS, CNED)
● Spanish courses for adults who use Spanish in a professional context (Business Spanish: tourism/restaurants, law, etc.)
● Spanish pronunciation/phonetics/conversation courses (exercises provided by the Cervantes Institute). During my Master's degree, I specialized in Spanish phonetics for foreigners. Students can achieve a very good level of oral production even if they are beginners* :)
● Written production, grammar, oral and written comprehension.
● Spanish civilization course.
I live in Spain, so I give all my classes on Skype.
Skype classes are very flexible and as effective as face-to-face classes! (100% success rate for all Cervantes Institute DELE diplomas and all university exams!)
■ COMPLETE learning materials provided to all my students according to their personal level/age/interests (DELE preparation manual, grammar book, pronunciation guide, notes, mp3 audios)

I will be happy to read from you.

A greeting,
Joana :) 👩🏻‍🏫🇪🇸

Dr.

4.59

(86)

STEM or STEAM involves learning about:
1. Science
2. Technology
3. Engineering
4. Arts
5. Mathematics
The course is developed to give middle school learners a broad, comprehensive overview of these fields of study. Learners are introduced to career planning, so they become aware of the major course competencies that they need to develop. The careers vary from teaching to space studies.

Magdalene

4.59

(86)

Mini Makers STEM Lab is a hands‐on, online class where young creators explore early engineering, problem‐solving, and imagination using simple materials they already have at home. Each session features a guided STEM project—like paper helicopters, balloon rockets, marshmallow towers, or DIY parachutes—designed to build confidence, fine motor skills, and curiosity.
Kids follow along step‐by‐step on camera, test their creations, make improvements, and share what they built. The focus is on creativity, exploration, and learning through play. This class is warm, encouraging, and perfect for children who love building, experimenting, and making things with their hands.

Wilfred

4.59

(86)

Experienced Math and Physics tutor helping students excel in their IGCSE and A level exams. My lessons always cover
Clear explanation of key concepts
Past paper practise and exam Techniques
Personalised support and feedback
Let us achieve your academic goals together!

Luca

4.59

(86)

This class is designed for children and beginners who want to start learning Italian in a fun, supportive, and engaging environment. As a native Italian speaker who grew up in Italy and now studies in the United States, I help students learn the language in a natural and clear way. Lessons focus on basic vocabulary, pronunciation, simple grammar, and conversation, using interactive activities, games, and real-life examples to keep students motivated and involved. Each lesson is adapted to the student’s age, level, and learning style, helping them build confidence while developing strong foundations in Italian. My goal is to make learning enjoyable while helping students feel comfortable speaking and understanding the language.