Hello! My name is Olena Kalashnykova, and I am a university lecturer in Histology, Cytology, and Embryology with over eight years of academic experience at Kharkiv National Medical University. I hold degrees in Medicine and Higher School Pedagogy, which help me combine scientific accuracy with clear and engaging teaching.
I specialize in Biology and Chemistry for high school and university students, including IGCSE, IB, A-Level, and Pre-Med learners. My classes focus on understanding rather than memorization — we work with logic, structure, and real examples from medical and biological practice.
Each lesson is tailored to your goals: I use visual materials, interactive discussions, and diagnostic mini-tests to track your progress. Students describe my teaching as calm, supportive, and inspiring — I truly enjoy helping people see how fascinating life is at the cellular level!
If you want to learn Histology, Cytology, Embryology, Biology, or Chemistry in a way that feels alive and meaningful, I’ll be happy to guide you. 🌱
Availability
Choose a date and time to start booking your class.
Times are displayed in your local time zone.
Can't find the availability that suits your needs?
Kharkiv National Medical University – Faculty Of Medicine
Ph.D.
Kharkiv National Medical University – Department Of Pedagogy And Psychology Of Higher School
Degree - B.A.
Kharkiv National Medical University – Internship In Pathological Anatomy (2015–2016)
Master/Postgraduate
Other things I like
Frequently Asked Questions
Can I cancel a booking?
Yes, you can cancel booking up to 8 hours before the lesson starts, indicating the reason for the cancellation. We will study each case personally to carry out the refund.
Can I modify a booking?
Yes, something unexpected can always happen, so you can change the time or day of the lesson. You can do it from your personal area in "Scheduled lessons" through the option "Change date".
Where are the lessons held?
The class is done through classgap’s virtual classroom. Classgap was developed specifically for educational purposes, including many useful features such as: digital whiteboard, online text editor, webcam, screen sharing and many more. View virtual classroom
How do I pay for the lesson?
At the time you select a lesson or package of hours, you will make the payment through our virtual payment service. You have two options: - Debit / Credit - Paypal Once the payment is settled, we'll send you an e-mail with the booking confirmation.
Hello! I'm Sebastián, a recent doctor preparing for the MIR exam.
I'm an Argentine living in Spain, passionate about chemistry and mate.
I specialize ...
👋 Hi! I’m Dr. Hamza, a Medical Doctor (MBBS/MD) from one of Pakistan’s top medical institutions — where I graduated with honors in Medicine. 🏅 I als...
Hey there, my name is Mashmoom, and I am a Molecular Biologist and Biochemist. As a tutor, I want to simplify the complexities of biology and make it ...