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 10 years of experience teaching online

  • Maths
    Middle sc., High sc. / Sixth form, University
  • Chemistry
    Middle sc., High sc. / Sixth form, University
  • Physics
    Middle sc., High sc. / Sixth form, University
  • Geology Middle sc., High sc. / Sixth form, University
  • Biology Middle sc., High sc. / Sixth form, University
  • English Elementary/A1-2, Intermediate/B1-2
  • Technical Drawing Intermediate, Advanced
  • Computer Programming
    Intermediate, Advanced



EnglishWorking proficiency

CatalanFull proficiency


Master/Postgraduate Paleontología Studying
Degree - B.A. Geología
Certification Programación


Hello, my name is Rubén, geologist. I am tutor of students from secondary school to university, in sciences and related subjects (like programming or technical drawing). I try to adapt my teaching methodology to each learner, and the level of his academical course and grade. I think that the traditional methods are not useful for who needs more help, because they did unsuccessfully, so I like to focus on creative and unusual methods. There is no perfect methods, but everybody has his proper method.

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

hours Monday

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

Naturaleza Viajar Astronomía Ajedrez Go Videojuegos Juegos de rol


Noelia Belda
El mejor, he aprobado gracias a él
Buen profesor, mi hijo está muy contento con las clases recibidas. Hizo refuerzo en verano y volveré a contactar con él si lo necesita otra vez.
Sandra Alonso
Rubén ayudó a mi hermano a aprobar las matemáticas de todo 3° ESO en 1 semana. Aunque le avisamos con muy poco tiempo de antelación, no tuvo ningún problema en emplearse al máximo durante esa semana. En resumen: buen método, buen trato y excelentes resultados.
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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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