Why learning with Classgap?

Satisfaction guaranteed

If you're not completely satisfied after your first class, we'll refund your purchase.

If you didn't do the lesson, it's cancelled or you are not completely satisfied within 24 hours passed your first lesson, we'll help you find a new tutor or refund your purchase.

Change the date at any moment

You can change the date of the class if something unexpected happens

Pay once you've received the lesson

We will make the payment of the lesson when finished

You will need to enter your payment details. In the case of individual class bookings the amount will be charged at the time of the class, but in the case of packs the payment is made in advance.





over 1 year of experience teaching online

  • Maths Middle sc., High sc. / Sixth form, University
  • Physics
  • Chemistry
  • English



GermanWorking proficiency

EnglishFull proficiency


Degree - B.A. Maths - Matemáticas
Degree Ingeniería Técnica Industrial


Your best choice is to have a mathematician as a teacher! We love math, so we can transmit all the wonders of it to you. Mathematicians have the concepts so well grounded that we can transmit clarity and self-confidence, which is a key point to adopt a positive attitude towards this subject. Your duty: Practice, practice, practice. My duty: To clear the path for your success and to give my commitment to your goals.

Book an online lesson (The calendar displayed shows your local time)

hours Monday

About me (pictures, hobbies, extracurricular interests...)


Javier hace las clases amenas. Hace que te apetezca practicar los ejercicios. Está siempre disponible para resolver dudas. Te explica las cosas hasta que las entiendes. Recomendable 100%.
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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.

• 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.

• 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".

• How does a lesson at Classgap happens?

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.

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