Jonnalyn Gellor General and Business English & Biological Sciences
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Hi, I’m Jonnalyn. I have over eight years of experience as an online ESL teacher, working primarily with adult learners to improve their speaking, listening, and overall communication skills. In addition to my ESL work, I also have one year of experience teaching Biology at the college level, giving me a solid background in academic instruction and content delivery in the sciences.

I’m a licensed professional teacher with a Bachelor’s degree in Biology, and I hold multiple certifications including TEYL (Teaching English to Young Learners), TESOL (Teaching English to Speakers of Other Languages), and TOEFL. These have equipped me with a strong foundation in language instruction, classroom management, and learner-centered approaches.

My teaching experience spans General English, Business English, corporate communication, and Biological and Medical Sciences. I’ve worked with learners from beginner (A1) to advanced (C1) levels, including professionals in healthcare, tech, finance, and sales. I also provide academic support—guiding doctors, nurses, and students in thesis writing, research editing, and presenting scientific content in English.

My teaching methodology blends communicative and task-based approaches. I focus on real-world application, guided practice, and personalized feedback. I aim to create structured, respectful, and engaging sessions where learners feel supported and challenged. Whether I’m coaching a student through a business presentation or helping a healthcare professional write a research abstract, I adapt my instruction to match their goals and field.

I’ve also contributed to research work in both marketing and science, which allows me to connect deeply with learners from academic and professional backgrounds. With this combination of language expertise and subject knowledge, I strive to deliver relevant, results-driven instruction that helps learners succeed in global environments.

Subjects

  • English Pre-KG, Nursery-Bachelors/Undergraduate

  • Biology Grade 11-Bachelors/Undergraduate

  • IELTS (Academic & General)

  • Science & Technology Pre-KG, Nursery-Grade 10

  • B2 Business English Beginner-Intermediate

  • Phonics in English Language Pre-KG, Nursery-Grade 2

Experience

  • Online Teacher (Dec, 2023–Present) at Edge International, Singapore
    Delivered English classes to junior learners
    (ages 3–17) using Landmark and Disney
    curricula.
     Conducted preparation courses for Oxford
    Test (B1, B2, C1).
     Ensured interactive learning through
    storytelling, games, and roleplay.
  • Online Teacher/Researcher (Jan, 2023–Present) at Private Science/Medical Tutor and Assistant Researcher
     Supported in designing and organizing
    theses and case studies.
     Conducted literature reviews and
    collected research data.
     Delivered tutorials in anatomy,
    physiology, and biochemistry.
     Offered personalized support to enhance
    understanding and exam readiness.
  • Online Teacher (Jan, 2016–Nov, 2023) at 51talk Philippines
     Preparing and delivering lessons to improve students' reading, writing, and conversing skills.
     Developing educational materials such as pictures, realia, and visual aids.
     Tailoring my teaching style in accordance with students' needs.
     Managing interpersonal dynamics to ensure that the class is conducive to learning.
     Tracking and reporting on students' progress.
     Remaining up-to-date with our learning software.
     Ensuring that my equipment is in good working condition at all time
  • College Teacher (May, 2010–Apr, 2011) at Southern Baptist College, M'lang North Cotabato
     Planning and implementing Science teaching strategies.
     Developing teaching aid and materials.
     Planning syllabus and lessons.
     Explaining science concepts and principles to college students.
     Preparing and delivering lecture sessions and assigning projects and assignments to the
    students.
     Planning extra curriculum activities.
     Overseeing the science laboratory activities.

Education

  • Bachelors in Secondary Education in Biological Sciences (Jun, 2009–Mar, 2010) from Holy Child School of Davao
  • 2nd Year Medicine (Jun, 2003–Mar, 2005) from Davao medical school foundation, davao, philippines
  • Bachelors of Science in Biology (Jun, 1992–Mar, 2003) from Davao Doctors College, Davao City

Fee details

    ₱200–350/hour (US$3.25–5.69/hour)

    There's night time differential

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