Private teachers in Papendrecht

Find your perfect private tutor in Papendrecht.
Learn with our teachers at home or in their studio.

13 private teachers in Papendrecht

0 teachers in my wish list

+–

13 private teachers in Papendrecht

(7 reviews)

Isabel - SpainRecently active£22

£22Online spanish classes of conversation, grammar, exam preparation

Trusted teacher: I am a qualified and experienced native Spanish teacher. I have been teaching Spanish to English students for more than 15 years and I have been teaching Spanish in Germany for 1 year. I have studied Philology at the University in Spain. I trained as a Spanish Teacher for Foreigners in Germany and in USA. I can speak English and German fluently, so there will be no difficulty in the teacher-student relationship. With me you can obtain good results, whether you want to learn or improve your Spanish, whatever your goal: • Obtain the DELE diploma at any level. • Improve your Erasmus experience. • Improve your experience as a tourist. • If you want to practice your Spanish regularly to maintain your current level * I have several conversation topics with questions to really practice Spanish. I give classes for all levels, grammar or conversation with a methodology personalized to the age, mother tongue and previous studies of the student. I take as a reference point the level and objective that the student wants to achieve in order to apply one or another method. In case of group classes, the price may be different.

Spanish · Clast test preparation · Grammar

(4 reviews)

Cornelia - Palzem, GermanyRecently active£34

£34Fun Cooking Classes for all ages, while learning about foods from different cultures, as well as safe cooking techniques.

Trusted teacher: Let’s have fun in the kitchen while learning to cook in a safe environment. How many different cultures do you know? Have you tried their foods? How adventurous are you? Some of the delicious things you will make are... · Soups · Quiches, Wraps, Sandwiches · Pasta and sauce · Chicken baked in the oven · Let’s learn about spices · Salads from different countries · An easy curry (always a crowd pleaser!) · A chocolate cake recipe that is over 100 years old! · And you will have Gluten-free, Sugar free, Vegan, and Vegetarian options Do you want to cook something all by yourself? There are a few basic rules we all need to know. These will be discussed during class. Safety First! Is there a special Anniversary or Achievement you would like to Celebrate? Then, let’s discuss it and plan for your special day.

Cooking

Angel - IndiaRecently active£18

£18ATCL Pianist providing fun, customized online piano lessons for all ages across the globe. Preparations for grade exams are also provided

Trusted teacher: I provide fun and personalized piano lessons, by adapting lessons based on your proficiency(beginner, intermediate or advanced), age group, and goals (hobby and leisure, grade exams). For beginners, I start with the basics of the piano and begin with teaching Tutor books. Not only will you be playing songs and pieces in no time, but you will be building a strong foundation of note-reading, music theory,sight-reading, technique, and more! My approach is to teach very thorough foundations so that my students are well prepared for exams and performances such as Trinity, ABRSM, School/ church performances Get in touch to start your lessons! ( Please note: There may be a waiting list)

Keyboard (music) · Piano · Music theory lessons

(6 reviews)

Ansh - Eindhoven, NetherlandsRecently active£16

£16As a student you are trained to become an electronic engineer in product design. Designing has an intrinsically multidisciplinary character.

Trusted teacher: Applied Power Electronics & Motion Digital Signal Processing Electrical & Electronic Power Systems Telecommunications Microwave Electronics Control Engineering, with all electrical subjects on need basis. apart from that live and practical’s are also available at coding level like VHDL,System verilog digital electronics.

Electrical engineering · Electronic circuits · Elementary school level

(2 reviews)

Magdi - Cairo, EgyptRecently active£13

£13Organic and In-organic Chemistry online Tutoring Classes for IGCSE & GCSE curriculums

Trusted teacher: Hey, students! Have you ever wondered how your chemistry teacher became such an expert on all things molecules and atoms? Well, being a chemistry teacher requires a lot of hard work and dedication, but it's also an incredibly rewarding career. A chemistry teacher is someone who helps students to understand the amazing world of chemistry by breaking down complex concepts, conducting experiments and providing guidance and support along the way. They play an important role in helping us to understand how the world around us works and inspire us to pursue careers in science. If you're interested in becoming a chemistry teacher, this video is for you! We'll explore the qualities and skills you need to succeed in this exciting field, and give you some tips on how to make the most of your studies. So, let's get started! With over 20 years of experience, I have developed excellent and advanced teaching techniques that help students easily understand chemistry and science. I have great communication and presentation skills and remain patient and calm when tutoring. I constantly follow up on my students' learning progress and regularly assess their understanding through continuous solving of topical questions and past papers. I also maintain good follow-up with parents. My approach to teaching is results-oriented, with a focus on helping students master the content, both offline in Cairo, Egypt and online worldwide. With my qualifications and experiences; degree in pharmaceutical science, two master degrees, one is Master of Business Admiration “MBA” and many other postgraduate diplomas and certificates plus the Canadian Board of Pharmacy. Experiences: about 30 years practical experience in the field of pharmacy and pharmaceutical industry with parallel coaching and tutoring for Chemistry and science syllabus and subjects. Focusing mainly on British curriculums GCSE and IGCES and on International Baccalaureate “IB”. Have taught also college level chemistry curriculum of Canada and Egypt. For GCSE and IGCSE, I teach Cambridge, Edexcel, AQA, OCR and others, both Ol, As & A2. For IB, I teach both Sl & HL. I teach students from Year 9 to 12. Excellent teaching skills. Perfect explanation for the students. Continues follow up and assessment for the students with solving on topical questions and past papers. Topics of chemistry taught including but limited to: Stoichiometry, Atomic structure, Periodicity, Chemical bonding, Energetics, Kinetics, Equilibrium, Acids and bases, Redox, Organic chemistry and Measurements and analysis. Intensive summer courses available... Classes are online worldwide and offline in Cairo , Egypt. Areas: Nasr city, El Rehab, El Sherouq, Maadi, Mohandessin, Zayed, El Mokatam, October city and other areas in Cairo and Alexandria, Egypt.

Chemistry · Organic chemistry · Science

(5 reviews)

Ziad - Magdeburg, GermanyRecently active£30

£30Solfege & Oriental Solfege: Quarter Note - Rast, Bayet, Siga, Kord, Hijaz, Ajam, Nahawand - Major & Minor Scales

Trusted teacher: With over 8 years of experience as a Solfege, Oriental Solfege, Oud, and Oriental singing teacher, I am a Lebanese musician currently residing in Mönchengladbach, Germany. I honed my skills for 8 years at the Lebanese National Conservatory. Prior to my relocation, I taught at Casa Beethoven Academy in Lebanon and also held private music lessons. As a concertmaster, I performed with the oriental orchestra "Loubnan Assalam" for over 5 years. My move to Germany was motivated by my pursuit of graduate studies at the University of Kamp-Lintfort. Fluent in English, Couramment en français, ولغتي الأم هي اللغة العربية. Aber leider spreche Ich ein bisschen Deutsch. Solfege, the foundation of music theory, is an essential tool for any musician who wishes to understand and create music. It provides a way to identify and communicate notes, intervals, and rhythms, and it is the key to developing musical literacy. In this class, you will delve into the world of scales, exploring the unique characteristics of Western and Oriental scales. We will study the following scales: Rast, Bayet, Siga, Kord, Hijaz, Ajam, Nahawand- Major & Minor Scales. In addition to these Western and Oriental scales, we will also introduce you to the quarter note, which is not traditionally found in Western music. It is a quarter note with a unique and distinct sound. Whether you are a beginner or an experienced musician, this class will provide you with the knowledge you need to use scales effectively for improvisation, singing, and playing any instrument. With this knowledge, you will be able to: * Read and write music (dictation) in solfège notation for both Western and Oriental scales. * Identify and communicate notes accurately in the context of various musical traditions. * Develop a deeper understanding of music theory and rhythmic concepts. * Infuse your musical performances with a broader range of expressive possibilities. We will use the book "المقامات الشرقية by Georges Farah" as the main reference for our study of Oriental solfège. This book is considered the best book in the Middle East to teach Oriental Solfège. Discover the power of solfège to enhance your musical skills and open up a world of new possibilities!

Music theory lessons · Music theory

(1 review)

Hamid - Rome, ItalyRecently active£26

£26Private Math Tutoring by Experienced Teacher For all Levels.

Trusted teacher: Are you looking to improve your math skills with personalized guidance? Join my private tutoring sessions designed to help students excel in mathematics. .................................................................................................... About Me: With a Master's degree in Mathematics and Applications and 4 years of PhD experience, I bring a deep understanding of mathematics and a passion for helping students succeed. I have 7 years of teaching experience and am fluent in English and Arabic. .................................................................................................... What I Offer: 1- Customized lessons tailored to each student’s needs and learning pace. 2- Clear explanations of complex mathematical concepts. 3- Assistance with homework, test preparation, and skill development. 4- Flexible scheduling to accommodate your availability. 5- Support for students at all levels, from elementary to university. .................................................................................................... Why Choose My Tutoring Services: Proven track record of helping students achieve higher grades and improved confidence in math. Advanced academic background in mathematics, ensuring high-quality instruction. Commitment to creating a positive and encouraging learning experience. Join my tutoring classes and take the first step towards mastering mathematics. Whether you need help with specific topics or overall improvement, I support your academic journey. .................................................................................................... Feel free to reach out for more information or to schedule your first session. I look forward to helping you achieve your math goals!

Math · Algebra · Statistics

(1 review)

Dylan - Alkmaar, NetherlandsRecently active£41

£41Learn Guitar in a fun, playful way. Become expressive and confident

Trusted teacher: Fun & Enthusiastic Guitar Lessons for Beginners (Kids & Adults) Looking to learn guitar in a way that keeps you excited and motivated? I'm here to help you play your favorite songs quickly with easy-to-learn tools and techniques! Whether you're a complete beginner or want to gain more confidence in jamming, I provide fun, engaging lessons tailored just for you. Why Choose Me? Play your favorite songs right away! Lessons for children and adults, customized to your learning pace. Focus on easy, effective methods that keep you inspired. Learn to jam confidently and tap into your self-expression. Supportive and enthusiastic teaching style to make learning enjoyable. Let's start your musical journey today fun, simple, and designed to help you fall in love with the guitar!

Guitar

(1 review)

Amine - Riyadh, Saudi ArabiaRecently active£16

£16French Language for all levels, and all ages Best Way

Trusted teacher: French Language is a beautiful language, easy to learn, just need a little bit of effort I can teach you French Language the best way, as a French Native I can go everywhere in Riyadh, in every location or teach you Online via WebCam I make a special program for you to learn the best way

French

(1 review)

Anna - Bristol, United KingdomRecently active£29

£29Acting and Performance Lessons With a Qualified Theatre Director

Trusted teacher: Acting and performance skills can help you in many walks of life. It's about building confidence and getting comfortable within your own voice and body, as well as understanding text and character. Using my background in English Literature and New Writing, and my Masters in Drama Directing from Bristol Old Vic Theatre School; I will tailor classes to each students particular needs and goals. Working closely with students on textual clarity, vocal technique, characterisation and confidence is my speciality. You might need some 1-2-1 assistance with a monologue or understanding a playtext better, you might want some help with audition prep or advice on self-tapes, or you might just want to build your confidence and strength in public speaking. Acting Lessons with me will help! I draw from a range of theatre practitioners such as Barbara Houseman, Katie Mitchell, Stanislavski and Misner, and enjoy employing vocal techniques to help gain clarity with text.

Acting · Public speaking · Self-improvement

(1 review)

Natali - Casablanca, MoroccoRecently active£15

£15Bollywood Indian dance classes at home (Casablanca) and online, wedding dance (valse, tango, Latino)

Trusted teacher: Indian Bollywood dance these are dances from Indian cinema, romantic, dazzling, rhythmic and original. The gesture system makes the dance pretty and unforgettable Bollywood allows you to become more feminine, sporty, graceful, have pretty shapes and even lose weight. Bollywood class is a good gift for yourself, your mom, daughter, girlfriend...Or do you want to dedicate dance to your man? Become a princess with Bollywood dance! 👰‍♀️Wedding dance (slow walse, Viennese walse, rumba, Bollywood). According to European tradition, the newlyweds do their first dance at a wedding in honor of their love and the new family. Do you want to do something like this? Choose the style yourself and let’s get started!

Bollywood dance · Waltz dance · Argentine tango

(1 review)

Hiba - Beirut, LebanonRecently active£29

£29Vocal sessions to improve voice ,Singing ,Piano, Guitar ,History of music , Music education

Trusted teacher: I am a music teacher who has a wide experience in teaching music I have taught in many schools and institutes I teach online music classes for all levels ,for kids and adults. I teach music education in general in addition to piano, guitar, singing

Keyboard (music) · Singing · Music theory

(1 review)

Vassilis - Budapest, HungaryRecently active£13

£13Music Technology, Audio Engineer, and Mixing Class

Trusted teacher: ❗STARTING ON 06- JANUARY ❗ ❓Wanna learn mixing and audio production techniques right from Grammy? ❓Wanna start your own lives and productions in Pop/Rock, Singer-Songwriter, Techno, House? ❓Wanna learn how to master songs for every platform with the appropriate LUFs, Bit rate, and Bit depth? 🎛️ In Music Technology, Audio Engineer, and Mixing Class you'll find all you need to know in order to take the most out of your audio equipment. And there's more: ✴️ You'll have the opportunity to learn next to the Mentee at GrammyU and 2x awarded Songwriter, Heludee ✴️ You'll learn how to set a home record studio that works for you ✴️ You'll get hands-on experience to DAWs (FL Studio, Adobe Audition, Waveform, Audacity and more) BOOK YOUR SEAT NOW 👇

Sound (music) · Audio recording · Computer generated music

Nina - NetherlandsRecently active£22

£22IB Biology SL tutoring for those in need of extra support with anything biology-related, whether it's to do with anatomy or plants!

Trusted teacher: I completed Biology HL in IB with a 6 overall. I am now studying it at the university level and am ready to help students struggling with IB Biology SL. I am familiar with the syllabus and can help students break down complex topics into simpler concepts that are easy to digest. We will begin with a lesson in order to get to know each other and see whether our goals align. We will discuss what exactly you need help with and make a weekly tutoring schedule. At the end of every class I expect students to let me know what they need help with next time or tell me 3 days before the next lesson at the latest. This ensures each class makes the most of our time together. At the beginning of the next lesson we will do a few practice questions to revise out previous class and continue with the next desired topic. I am looking for students who are open to receiving constructive criticism. I promise I will approach all of our lessons with patience, kindness, motivation and support!

Biology

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

Translate this text using Google Translate.

Mikolaj - Amsterdam, NetherlandsRecently active£35

£35Learn Guitar (Pop, Jazz, Funk) and music in general :)

Trusted teacher: In this class, we will be exploring music by learning your favorite songs from any genre you enjoy. I will personalize the lessons to your needs and make sure we cover all the fundamentals that will set you on the right track! I will teach you how to: - learn songs by ear, (pop, jazz r&b, funk, fusion, hip-hop, and whatever you like honestly) - improvise, - compose, - understand music theory (harmony, rhythm, scales, progressions, sight-reading etc.) - produce and sound design in Ableton. About me: Education: I started playing music at 7 years old, went through 12 years of music school, and then moved to Amsterdam and spent 4 years learning jazz guitar at the Conservatorium van Amsterdam. I frequently play with various bands ranging from Pop and Funk to Jazz Fusion and even Techno. Teaching style: I’m open-minded and straightforward, and I focus on giving my students the tools and basics they need to learn and explore on their own.

Music theory · Guitar · Audio production

Alessandra - Ixelles-Elsene, BelgiumRecently active£55

£55Mathematics, Physics tutoring classes from an Engineering Architecture Graduate

Trusted teacher: As an alumni of the European School of Brussels III, and a recent graduate of the Bartlett School of Architecture (UCL) in MEng Engineering and Architecture with a first class honours, I teach any level of student with subjects they may struggle or need support with. I know the european school, GSCE, and international baccalaureate very well and can offer support in Maths (any level) and Physics (any level). I can be contacted in the following languages; English, Spanish, Italian, French and German.

Tutoring

Carolina - Benidorm, SpainRecently active£22

£22Singing classes for all levels and musical styles

Trusted teacher: Hello! My name is Carolina, I have a degree in Performing Arts and Interpretation and trained in lyrical singing, opera and modern singing. I give dynamic and fun vocal technique classes to all ages and levels. Half of the class we do warm-up and technique and the other half the repertoire or song of your choice.

Singing · Music theory · Voice (music)

Translate this text using Google Translate.

(1 review)

Amr - Dubai, United Arab EmiratesRecently active£56

£56Bodybuilding and Fitness classes , hiit, cardio exercise, training with Wights , Resistance exercise

Trusted teacher: The program works to improve the sports performance of young and middle-aged trainees and achieve the best physical fitness performance so that the trainee, regardless of his age, can obtain a decent appearance and a healthy, harmonious body that satisfies the client.

Fitness · Personal training

Jamil - United StatesRecently active£69

£69Math Power Unlocked : Learn Smarter, Faster, And Score Higher!

If you are struggling with Math and scared of it, then don't worry. Whether you are dodging algebra like a ninja, wrestling with calculus, or just worried about how to boost your grades, I've got you covered. Math can be your superpower, and that will be my job. - I give personalized, and easy to understand lessons (no more confusion) - Fun and interactive learning (yes, Math can be fun) - Strong focus on problem-solving and concept clarity (I will explain repeatedly if needed until you understand) - Assistance with homework, test prep, and advanced topics (ace all of them) I taught students across the world and they performed extraordinarily in their homeworks, class tests, and even in their board exams. With my proven techniques I will help you excel in Math, and you will no longer think Math is your nightmare. Let's make Math your best subject!!

Calculus · Algebra · Math

José - SpainRecently active£26

£26Programming in C, C++, Java, Kotlin, Python and others. Creation of web and desktop applications.

Trusted teacher: Programmer engineer with more than ten years of experience teaches programming classes at all levels. My classes can help students of Computer Science Degrees or Cycles, new programmers or someone who is making their website or interacting with an Artificial Intelligence assistant. - At the introductory level you will learn concepts such as variables, data types, flow control statements, functions, pointers, arrays, structures and search and sorting algorithms. This is what is normally taught in the "Programming Fundamentals" subject in the first year of a Bachelor's Degree in Computer Science or in other similar degrees. - At the intermediate level you will learn more advanced concepts: classes, constructors, inheritance, polymorphism, interfaces, exceptions, access modifiers, collections and data structures. - At the advanced level you will learn concepts of object-oriented programming, functional programming, database connections, HTTP protocols, creating web applications or how to deploy an application. If you are already a programmer, you may want to take some refresher classes to reinforce certain concepts.

Computer programming · Computer science · Web development

Translate this text using Google Translate.

Mohadeseh - Calcio, ItalyRecently active£11

£11Coaching for Immigration, Education, and Personal Development

Trusted teacher: I am a third-year Master's student in Clinical Psychology and Neuroscience at the University of Pavia, currently working on my thesis. Over the past five years, I have worked with high school students(and later, bachelor students) in various roles, including university entrance support, teaching, and assisting a school psychologist. This experience sparked my curiosity about the needs and motivations of individuals, particularly young adults, which became the focus of my Bachelor's research project. Later, I moved to Italy for my Master's degree and spent another year working as an immigration consultant. I consider myself a social and empathetic person who enjoys listening to people’s stories and learning about their paths to success. During my teaching assistant internship, I worked closely with around 100 students over the course of a year, which profoundly shaped my perspective on career development. This experience led me to pursue certifications in coaching and educational guidance, and I am continuously expanding my knowledge in these areas. If you feel uncertain about your life, want to develop personal growth skills, or simply need help building a productive daily routine, don’t hesitate to reach out. I would be happy to support you on your journey.

Life coaching · Psychology (for students) · Career development

Garth - South AfricaRecently active£12

£12English for all learners. Grammar, pronunciation. Writing skills

Trusted teacher: To learn how to converse in English. Understand and use correct Grammar. To use correct pronunciation. Homework help and support. Test and exam preparation mock tests and exams. Conversational English. Puplic speaking support and gaining confidence with it.

English

Aldo - Houston, TX, United StatesRecently active£34

£34Math, physics, Spanish and Social Studies tutoring

Trusted teacher: Hi, I am an experienced math, physics, Spanish and Social Studies tutor, with more than a year of experience tutoring students online and multiple loyal clients. Most students I have tutored thank me that I have made them excel in the subject and that I made them getting the highest marks of their entire classroom. I explain students how to solve each question very clearly, and won't give up trying to explain until I make sure they understand it completely. I will tailor our lessons to adapt to your specific needs and goals. We can do a short, lesson to determine whether or not I'm a good fit for your learning style. Sessions will take place via Zoom or Google Meet. I can tutor from Middle School level all the way up to early undergrad. That is, roughly from 7th grade to sophomore year of college in the US education system.

Math · Science

Anas - Paris, FranceRecently active£31

£31Private lessons in math - physics - chemistry - engineering science

Trusted teacher: Hello dear students and participants, As a former teacher, I had the privilege of supporting more than 40 students over the past year in their academic progress. I teach the following subjects: mathematics, physics, chemistry, engineering sciences and Excel. Thanks to my personalized and structured approach, I help my students develop their skills, their self-confidence and their autonomy. By working with me you will learn: *Effective resolution methods, *Intensive practice of exercises, *Educational coaching adapted to your needs, *The development of summary revision sheets, *Career guidance to inform your future choices, *Practical practical work in engineering sciences, to anchor concepts in reality. At the same time, as an information technology consulting engineer, I have in-depth expertise in the technical field, with the ability to design and implement innovative solutions in complex environments. Passionate about aeronautics and piloting aircraft, I cultivate essential qualities such as rigor, discipline and rapid decision-making in dynamic environments. This passion fuels my teaching by adding a practical and inspiring perspective.

Physics · Microsoft excel · Math

Translate this text using Google Translate.

Showing results 201 - 225 of 63027201 - 225 of 63027

Our students from Papendrecht evaluate their teacher.

To ensure the quality of our teachers, we ask our students from Papendrecht to review them.
Only reviews of students are published and they are guaranteed by Apprentus. Rated 4.8 out of 5 based on 32 reviews.

French Language for all levels, and all ages Best Way (Riyadh)

Amine

I’m a beginner in French, I am incredibly grateful for the opportunity to learn with Amine. He’s not only kind and understanding, but he also knows how to make lessons feel really manageable. He takes the time to explain things in a way that’s easy to follow, and I never feel overwhelmed even when we cover new material. The syllabus he puts together is perfectly structured, making it easy for me to keep up without feeling stressed. I really appreciate how he adjusts the pace to fit my needs, and it makes learning feel both comfortable and motivating. Thanks to him, I’m feeling more confident with my French And I’m looking forward to continuing my French learning journey with him

Review by MUSTAFA

Private Math Tutoring by Experienced Teacher For all Levels. (Rome)

Hamid

So far, I have had two sessions with Hamid and the experience has been pleasant. I find that Hamid was well prepared before the classes began. He made his own notes, schedule and was very organised with his approach as a tutor. Professional, clear about his teaching methods etc,. As a tutor, he is very patient and explains everything with a simple and understandable analogies. I am happy with his teaching and hopefully will continue to do so. Highly recommended.

Review by JYOTHI