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5 private teachers in Valff

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5 private teachers in Valff

(2 reviews)
Brahim - Berrechid, MoroccoRecently active£25
£25Introduction to Relational Database and SQL Language by practise
Trusted teacher: Module 1: SQL Overview Outlining SQL as the cornerstone of database activity Applying the ANSI/ISO standards Describing the fundamental building blocks: tables, columns, primary keys, and foreign keys Module 2: Building the Database Schema - Creating tables and columns Building tables with CREATE TABLE Modifying table structure with ALTER TABLE Adding columns to an existing table Removing tables with DROP TABLE - Protecting data integrity with constraints Guaranteeing uniqueness with primary key constraints Enforcing integrity with foreign key constraints Imposing business rules with check constraints - Improving performance with indexes Expediting data retrieval with indexes Recommending guidelines for index creation Module 3: Manipulating Data - Modifying table contents Adding table rows with INSERT Changing row content with UPDATE Removing rows with DELETE - Applying transactions Controlling transactions with COMMIT and ROLLBACK Deploying BEGIN TRANSACTION in SQL Server Module 4: Working with the SELECT Statement - Writing Single Table queries Retrieving data with SELECT Specifying column expressions Sorting the result with ORDER BY Handling NULL values in expressions - Restricting rows with the WHERE filter Testing for equality or inequality Applying wildcard characters Avoiding NULL value pitfalls Module 5: Querying Multiple Tables - Applying the ANSI/ISO standard join syntax Matching related rows with INNER JOIN Including nonmatched rows with OUTER JOIN Creating a Cartesian product with CROSS JOIN - Combining results with set operators Stacking results with UNION Identifying matching rows with INTERSECT Utilizing EXCEPT to find nonmatching rows Module 6: Employing Functions in Data Retrieval - Processing data with row functions Conditional formatting with the CASE expression Utilizing the CASE expression to simulate IF tests Dealing with NULL values - Performing analysis with aggregate functions Summarizing data using SUM, AVG and COUNT Finding the highest/lowest values with MAX and MIN Defining the summary level with GROUP BY Applying filter conditions with HAVING Module 7: Constructing Nested Queries - Applying subqueries in filter conditions Creating correlated vs. noncorrelated subqueries Testing the existence of rows - Including subqueries in expressions Placing subqueries in the column list Creating complex expressions containing subqueries Handling subqueries that return no rows Module 8: Developing In-Line and Stored Views - Breaking down complex problems Selecting data from a query result set Using subqueries in the FROM clause - Creating views in a database Building reusable code Creating updateable vs. non-updateable views
Mysql · Oracle database · Microsoft sql server
(4 reviews)
Tamara - Madrid, SpainRecently active£55
£55Voice lessons online with an international singer!
Trusted teacher: 🎤 Unlock Your Voice with an International opera Singer with over 15 years stage experience Are you ready to discover the true power of your voice? Get ready for personalized voice lessons that will transform your vocal abilities, no matter your age or skill level. 🌬️ Master Your Breath: Learn the secret to breath control! Strengthen your diaphragm and achieve flawless vocal control. 💃 Perfect Your Posture: Discover how proper posture can elevate your singing performance. I will guide you to a posture that maximizes your vocal range and projection. 🎶 Find Your Authentic Voice: Uncover the unique beauty of your voice with expert guidance. Whether you're a beginner or an experienced vocalist, I will help you tap into your true, authentic sound. 👩‍🎤 All Ages and Levels Welcome: No matter your age or skill level, I welcome you with open arms. Whether you dream of singing on the stage or simply want to sing your heart out, these lessons are for you. I am an international opera singer, and perform leading roles on the world’s most important stages. I offer lessons in vocal technique, with a great emphasis on breathing technique, body work, as well as techniques to deal with performance anxiety. You will learn the key fundamental aspects of breath and body alignment techniques, and will be given vocal exercises that can help you to achieve your goals. We will focus on getting rid of unnecessary muscle tension, and finding a released and projected sound. I have sung at houses such as the Hamburg State opera, English National Opera London, Semperoper Dresden, Opernhaus Zürich, Gran Teatre Liceu Barcelona, Dutch National Opera, Salzburg, Rome in leading roles such as Carmen, Isabella, Adalgisa, Ariodante, Orfeo, Radamisto, Cenerentola, Hermia. I also joined the roster of the Metropolitan Opera for thé first time in 2020.
Voice (music) · Opera · Singing
(3 reviews)
Kevin-Yvart - Jacksonville, FL, United StatesRecently active£96
£96Premium History Lessons – HIGH-SCHOOL/UNIVERSITY/DIPLOMACY/POLITICS
Trusted teacher: All classes are online, adapted to your needs, but always with a wider view and effective understanding of your topic. History is not just a series of events—it is the story of civilization, shaped by ideas, power struggles, and cultural transformations. To truly understand it, one must see both the local and global perspectives, uncovering the connections that explain how and why societies have evolved. Raised in a family devoted to intellectual excellence and rigorous scholarship, I was immersed from an early age in history, philosophy, literature, and geopolitics. My expertise spans: A Dual Approach: Local & Global History 1.Local History: Understanding the Foundations -The evolution of nations and their unique paths. -Key figures, revolutions, and defining moments. -The impact of cultural, economic, and political shifts within a country. 2.International History: A Global Perspective -How empires, trade routes, and wars shaped continents. -The interplay between civilizations and the rise of global powers. -A comparative approach to revolutions, diplomacy, and geopolitical strategies. Master the Era of Your Choice You can focus on a specific time period or explore history as a unified and continuous narrative: -Ancient Civilizations (Greece, Rome, Mesopotamia, Egypt, China, India) -Medieval Europe & The Middle Ages -The Renaissance & The Age of Discovery -The Enlightenment & The Birth of Modern Nations -The 19th & 20th Centuries: Revolutions, Wars & Ideological Shifts -Contemporary History: Understanding Today's World Through the Past A Course Designed for Your Needs This comprehensive program can be adapted to your goals, whether you seek: -Academic support (school, high school, university) -> I will provide you with a complete methodology. -Essay preparation -Personal enrichment (deepening your historical knowledge) -Diplomatic insight (for professionals in international relations) -Political & economic analysis (for those studying or working in these fields) -History is more than knowledge—it is a tool for understanding the present and shaping the future. Join me, and let's uncover the past with depth, clarity, and insight.
World history · European history · Art history
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(1 review)
Yakine - Luxembourg, LuxembourgRecently active£30
£30**📢 PRIVATE & GROUP LESSONS – MATHEMATICS, PROBABILITY, STATISTICS & COMPUTER SCIENCE 📢
Trusted teacher: 👨‍🏫 Experienced teacher with over 10 years of experience** in teaching mathematics, probability, statistics and computer science. I support pupils and students of all levels: middle school, high school, preparatory classes and university. 🎯 Available courses: - Academic support in mathematics (middle and high school) - Preparation for competitive examinations for leading grandes écoles: BCE, ECRICOME, TAGE MAGE, IAE MESSAGE, etc. - Applied statistics & probability - Computer science: VBA, Python, SQL, Data Mining... - Methodological support and coaching for better organization and efficiency 📍 Face-to-face and distance learning (individual or small group lessons as needed). 🎓 Methodology: My method is based on a progressive and structured approach, adapted to the level of each student. We start with a diagnostic assessment to identify strengths and areas for improvement, then we set up a personalized learning plan. Each session includes clear theoretical reminders, progressive practical exercises and concrete scenarios to promote understanding and autonomy. Regular monitoring is provided with periodic reviews to measure progress and adjust the methodology if necessary. The goal is to optimize learning while promoting motivation and self-confidence. 💡 Why choose me? ✅ More than 10 years of experience in teaching and training ✅ Expertise in preparing for competitive exams ✅ Adapted and effective educational approach ✅ Proven results with students who have joined the best schools 🔎 Prices adapted according to the level and the formula chosen. First exchange to assess your needs and define a suitable program. 🚀 Make a difference and achieve your goals with quality support!
Math · Computer science · Statistics
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Despoina - GreeceRecently active£13
£13Modern Greek from the perspective of a native. Are you ready? Πάμε!!
Trusted teacher: Hello Linguophiles 👋✨️ My name is Despoina, I’m of Greek origin, and Greek is my mother tongue. Friends and family call me Debbie, so that’s how you’re going to call me too! 😊 I hold a degree in psychology and am a licensed professional in Greece, currently pursuing my MSc in Health Psychology! I love learning new languages and exploring different cultures and perspectives. I have a B2 certificate in Spanish, and I’m currently learning Korean. If you’re a linguophile like me and would like to learn Modern Greek, you’re in the right place! About the Classes: Classes are designed for all levels, and together, we’ll cover different aspects of the Greek language, including: 📝The Greek alphabet 📝Grammar rules 📝Vocabulary ⚠️Important Note: Since I’m not a certified Greek language teacher but a native speaker, I will teach you Modern Greek from the perspective of a native. The focus will be on speaking practice (writing can also be taught), and building vocabulary to help you understand everyday conversations and express yourself with ease. If you aim for casual learning of the language I can also assist you. If you already have a good knowledge of Modern Greek and just want to sharpen your skills, I can help you with extra speaking practice and answer any grammar questions to improve the flow of your speech and deepen your understanding.
Greek
Antonio - Brussels, BelgiumRecently active£31
£31Self Defense and Martial Arts | Private and/or Group
Trusted teacher: The course module is adapted to the student. The summary will be communicated during the first lesson: 1. Introduction 2. Communication and Psychology 3. Pressure Points 4. Hand to Hand Combat 5. Baton Attack 6. Knife Attack 7. Gun Attack 8. Rifle Attack (Theory) 9. Multiple Attackers 10. Bonus Tips ▪️ The techniques used will improve your confidence level and teach you how to defend against 1, 2, or even 3 attackers in different aggression situations. ▪️ Self Defense is a countermeasure that consists of defending the health and the well-being of oneself against harm. The use of the right of self-defense as a legal justification for the use of force in times of danger is available in many jurisdictions ▪️ I have experience in military and diplomatic missions, giving me a solid background to accompany you, and share with you the best skills on how to defend yourself in various situations. ▪️ I have traveled to many countries and assisted to many self-defense seminars, so, I can share with you the best methods to learn and lessons learned to avoid wasting time and turning in circles. ▪️I can provide you with the knowledge and skills to live independently in security. I can teach you basic and complicated self-defense, body language (yours and others), situational awareness, avoiding potentially dangerous situations and places, and asserting yourselves in risky situations. * For the more sensitive, specifically, parents with children who are victims of harassment. I can accompany your children, and help them to overcome their fears. Myself with a medium height, and considered not too big physically, I developed over the years for myself and my student's multiple skills and methods to defend ourselves whatever the size of our body is. ▪️ 15 years + of experience. ▪️ 7 years of MA Self Defense. ▪️ 4 years of MMA - Mixed Martial Art. ▪️ 4 years of Silat, Systema, Wing Chun, Aikido, Free Style.
Self defense · Martial arts
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Patrick - Katerini, GreeceRecently active£16
£16Come and learn Biology and Chemistry with an expert. Book now and have your best experience.
Trusted teacher: In the CIE (Cambridge International) curriculum, Biochemistry is primarily covered in Biology and partially in Chemistry at both IGCSE and AS/A Level. It focuses on the chemical processes and molecules essential for life. Here's a detailed overview: IGCSE Biology (0610/0970) Biochemistry at the IGCSE level introduces students to basic biological molecules and processes: 1. Biological Molecules - Carbohydrates: - Monosaccharides (e.g., glucose), disaccharides (e.g., sucrose), and polysaccharides (e.g., starch, glycogen). - Role in energy storage and release. - Proteins: - Made up of amino acids. - Functions: enzymes, structural components (e.g., keratin), and hormones. - Lipids: - Fats and oils: composed of fatty acids and glycerol. - Role in energy storage, insulation, and cell membranes. 2. Enzymes - Biological catalysts that speed up reactions. - Factors affecting enzyme activity: temperature, pH, and substrate concentration. 3. Photosynthesis - Biochemical process in plants to produce glucose using light energy, carbon dioxide, and water. - Equation: 6CO2 + 6H2O → C6H12O6 + 6O2. 4. Respiration - Aerobic respiration: Glucose + Oxygen → Carbon dioxide + Water + Energy (ATP). - Anaerobic respiration in humans: Glucose → Lactic acid + Energy. 5. DNA and Protein Synthesis (Basic level) - DNA as the molecule of inheritance. - Role of DNA in carrying genetic information. --- CIE AS and A Level Biology (9700) At the AS/A Level, biochemistry is studied in depth. Key areas include: 1. Biological Molecules - Carbohydrates: Structure and function of monosaccharides, disaccharides (e.g., maltose), and polysaccharides (e.g., starch, glycogen, cellulose). - Lipids: Triglycerides, phospholipids, and cholesterol. Role in membranes and energy storage. - Proteins: - Levels of structure: primary, secondary, tertiary, and quaternary. - Role of proteins in enzymes, antibodies, and transport (e.g., hemoglobin). - Nucleic Acids: - Structure of DNA and RNA. - Role of nucleic acids in protein synthesis. 2. Enzymes - Enzyme structure and mode of action (lock-and-key, induced fit). - Enzyme kinetics and factors affecting enzyme activity. - Competitive and non-competitive inhibitors. 3. Cellular Respiration - Glycolysis, Krebs cycle, and oxidative phosphorylation. - ATP production and its importance as an energy currency. 4. Photosynthesis - Light-dependent and light-independent (Calvin cycle) reactions. - Factors affecting photosynthesis. 5. Molecular Biology - DNA replication, transcription, and translation. - Role of mRNA, tRNA, and ribosomes in protein synthesis. 6. Biochemical Processes in Cells - Role of ATP in metabolism. - Metabolic pathways and enzyme regulation. --- CIE AS and A Level Chemistry (9701) While biochemistry is primarily a biology topic, it also features in chemistry at A Level: 1. Amino Acids and Proteins - Structure of amino acids and peptide bonds. - Protein hydrolysis and analysis. 2. Carbohydrates - Structure of glucose and its isomers. - Reactions of carbohydrates (e.g., oxidation). 3. Lipids - Structure of triglycerides, fatty acids, and phospholipids. - Saponification and ester formation. 4. Biochemical Techniques - Chromatography for separating amino acids and sugars. - Use of enzymes as biological catalysts in industrial processes. --- Summary - At the IGCSE level, biochemistry focuses on basic biomolecules (carbohydrates, proteins, lipids), enzymes, photosynthesis, and respiration. - At the AS/A Level, biochemistry delves deeper into molecular biology, enzyme kinetics, ATP production, protein synthesis, and metabolism.
Biochemistry
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Only reviews of students are published and they are guaranteed by Apprentus. Rated 4.9 out of 5 based on 69 reviews.

IELTS Coach | Tailored Exam Preparation | General English (Peckham)
Dean
Our first lesson with Dean was productive and an eye-opener. The lesson made me realize there are a few critical areas that I needed to grasp and understand to articulate the IELTS exam preparation. The lesson was fun, and Dean is a good attention detail tutor; he takes time to give a clear explanation of what to focus on. His energy is amicable, and he takes his work seriously. Thank you for the first lesson, and we look forward to our following lessons.
Review by ALDRIDGE
Voice lessons online with an international singer!
Tamara
I’m so happy I have the chance to take a class with Tamara, she is Great! I had many teachers in my entire life in different fields and Recognize a good one when is in front of me, Tamara is not just an amazing opera singer but a really amazing teacher. Her classes are gold! I get to learn so much in just one session, Thank you Tamara! Till next time❤️🫶
Review by JOHANNA HERRERA
Bulgarian lessons by a native speaker for beginners, intermediate and advanced
Emilia
Emilia is a lovely teacher. She makes you not just learn but also get excited about the language. She's also very flexible and understanding with the schedule when the workload situation changed, and I had to postpone the classes with short notice. I can warmly recommend her services to all who are interested to learn the Bulgarian language and culture.
Review by MATTI

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