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Osvaldo A. Cardona
Professional TeacherProfessional Teacher![]()
Teaches
English
Native
Spanish
Native
Speaks
Chinese (Mandarin)
German
Russian
TEFL/CIPELE certified Puerto Rican linguist who has 10 years of experience & can speak 5 languages
Teaches
English
Native
Spanish
Native
Speaks
Chinese (Mandarin)
German
Russian
TEFL/CIPELE certified Puerto Rican linguist who has 10 years of experience & can speak 5 languages
About Me
Me as a Teacher
My lessons & teaching style
Resume & Certificates
From Puerto RicoLiving in San Juan, Puerto Rico (06:36 UTC-04:00)
About Me
italki teacher since Jan 29, 2021InterestsMusicFoodTravel
Hello fellow linguaphiles! My name's Osvaldo but people usually call me Valdo. I could also be called 偶巴多 (中文), Oswald (auf Deutsch), or Освальдо (по-русски). My native language is Spanish but I also have a native fluency and proficiency in English. I have a Bachelor's degree in Philosophy and a Master's degree in Linguistics. I enjoy travelling, exercising, running, kayaking, dancing, and learning new languages. I've lived in Puerto Rico for most of my life but I also spent some time living abroad in Beijing, China and in Berlin, Germany.Me as a Teacher
I have a TEFL certification from ITA (International TEFL Academy) and I've been teaching ESL since 2015. I also have a CIPELE certification from the University of Salamanca. I've taught Spanish since 2021. I have experience working with students of different ages and levels of proficiency. I've taught children, teenagers, and adults with beginner, intermediate, and advanced levels of proficiency. I have experience teaching online, at language learning centers, and at traditional schools. I've had group classes and individual 1-on-1 classes too. I've also taught basic Mandarin Chinese at a local university.My lessons & teaching style
I use all kinds of tools and resources to teach classes online. I like to have my students do different types of exercises to help them improve their language skills (reading, writing, speaking, listening, grammar, and comprehension). I've used various platforms like zoom, skype, google hangouts, kahoot, and youtube. I have also used several documents like ppt's, pdf's, newspaper articles, and word documents. During class, my students do listening comprehension exercises, conversational activities, reading comprehension activities, grammar exercises, among others. If you wish, we can also use a book for our classes but we need to come to an agreement beforehand.My teaching material
- Homework Assignments
- Quizzes
- Presentation slides/PPT
- Audio files
- Text Documents
- PDF file
- Image files
- Articles and news
- Graphs and charts
- Video files
Certificates
Certificate in PELE - University of Salamanca - 2023Profesor de Español como Lengua Extranjera (PELE)
Professor of Spanish as a Foreign Language
Certificate verified
Certificate in TEFL - ITA - International TEFL Academy - 2015TEFL/TESOL Certification
Teacher of English as a Foreign Language/Second Language
Certificate verified
Education
2020 - 2024
Master's - Linguistics
2009 - 2015
Bachelor’s - Philosophy
Work Experience
2020 - 2022
English InstructorTeaching children and adults of different levels of proficiency. Teaching at the language center and online through zoom. Following their curriculum and developing my own lesson plans and teaching materials.
2020 - 2022
Mandarin Chinese InstructorTeaching Mandarin Chinese at a beginner level to college students. Following the university's curriculum and developing my own lesson plans and teaching materials.
2017 - 2020
English TeacherTeaching English online to children of different ages and levels of proficiency through the company's platform and following the company's curriculum and lesson plans.
2018 - 2019
English TeacherTaught English at a brick & mortar school to kids of different ages and levels of proficiency. Taught English, Math, Science, and Social Studies to 3rd, 4th, and 6th grade students. Followed the school's curriculum and made my own lesson plans and teaching resources.
2015 - 2017
Foreign TeacherTaught English at a training center for children of different ages and levels of proficiency. Followed the company's curriculum and lesson plans.
2021 - 2022
English TeacherTaught 5th grade to 9th grade English at a private school.
2023 - 2024
English TeacherWorked at a Public School (Ernestina Mendez) teaching 7th and 11th graders.
2022 - 2023
Language InstructorTaught English and Spanish as foreign languages to adult students who were native German speakers.
5.0
Rating
412
Students
2,632
Lessons
99%
Attendance rate
100%
Response rate
English Lessons
English
Spanish
Trial Lesson
290 lessons completed
USD 15.00+
Conversational English/Inglés Conversacional (NOT FOR COMPLETE BEGINNERS)
A2 - C2Conversation70 lessons completed
USD 15.00+
Package with 7% off
50-50 English Grammar & Conversation/Gramática & Conversación en Inglés
A1 - C2Language Essentials37 lessons completed
USD 15.00+
Package with 7% off
Availability
Based on your timezone (UTC+00:00)
136 Reviews
All
English
Spanish
David Margolius
21 Spanish lessons
Teacher’s pick
Valdo is a phenomenal teacher - attentive and creative. I have taken 3 weeks of lessons and see a dramatic improvement in my comfort with speaking and understanding Spanish.
Jan 24, 2025
Yvonne Vo
185 Spanish lessons
Teacher’s pick
I am on a mission to learn Spanish and Valdo is the best! I took a while looking at other teachers' profiles and chose Valdo because of his qualifications and excellent reviews. I look forward to my lessons every week, each time there is new material or we are reviewing to really let it sink in. Lots of variety, and he provides resources so that I can continue practicing Spanish outside of class as well. Valdo is a fantastic teacher, and just a really cool person in general.
Aug 30, 2023
Tre Morales
8 Spanish lessons
1000% an amazing experience! Osvaldo was super chill, explained things well, and help put together a plan that was personalized for me. He took the time to get to know more about me before jumping into a plan which I really appreciated as well. Excited for the journey to come!
Aug 18, 2025
Karim Khan
98 Spanish lessons
Teacher’s pick
Awesome teacher. I’ve been working with him for the past year and have really become more fluent and conversational
Aug 30, 2023
Mary Maxwell
4 Spanish lessons
Valdo went over his teaching techniques, asked about my expectations, and also went over some vocabulary and questions to gauge my knowledge of Spanish. It was a great introduction. I already booked my next lesson.
Aug 22, 2025
Yvette
3 Spanish lessons
The lesson was well structured and I felt comfortable with the style of teaching. I look forward to continuing to learn from this teacher.
Jul 16, 2025
Trial Lesson
USD 15.00
Your final payment will be made in USD