Sign up here
to receive £10 off on your first pack of 10 o 20 classes

Find out your level
Find out in just 5 minutes what your current level is, and what helps and techniques you can use to improve it.
Language Tests Language Tests
menu
close
Justino Castro

Justino

Verified teacher, moderated by the Classgap team
Colombia
10 10 4

5,0 (4)

0 lessons

Maths, Physics, Chemistry

+ 10 years of exp. teaching online classes

About me Availability Reviews (4) More info

About me

Hello. I am Professor Justino Castro R. and I have more than 10 years of experience in teaching. I graduated in Chemical Engineering and understood the importance of assimilating the basic concepts of these three subjects for the mastery of many fields of knowledge and industry. The idea is that you acquire a lot of confidence, security and taste these subjects and that you master and fall in love with these subjects as are Mathematics, Physics and Chemistry in both Spanish and English! I hope you decide to learn them completely and achieve any goal you set for yourself!

Availability

Choose a date and time to start booking your class.
Times are displayed in your local time zone.

April 27 - 03 May, 2025
sun
27/04		 mon
28/04		 tue
29/04		 wed
30/04		 thu
01/05		 fri
02/05		 sat
03/05
12:00
13:00

Book

Book

Book

Book

Book

Book

Book

Book

14:00

Book

Book

Book

Book

Book

Book

Book

Book

15:00

Book

Book

Book

Book

Book

Book

Book

Book

16:00

Book

Book

Book

Book

Book

Book

Book

Book

17:00

Book

Book

Only 20 min.

Book

Book

Only 20 min.

Book

Book

Only 20 min.

Book

Book

Only 20 min.
18:00
19:00
20:00

Book

Book

Book

Book

21:00

Book

Book

Book

Book

22:00

Book

Book

Book

Book

Only 20 min.
23:00

Book

Book

Only 20 min.

Can't find the availability that suits your needs?

Contact teacher

Feedback from my students

Daniel Hernández
★★★★★
El profesor explica con claridad los temas y resuelve las dudas de manera eficiente
Jeannette Pupiales
★★★★★
Las clases del Profesor Justino son excepcionales, por cuanto sus explicaciones son bastante claras, además hace ver los temas más complejos de la manera más sencilla posible. Es profesional en Ingeniería Química, se caracteriza por ser responsable, respetuoso, amigable. Con gran experiencia universitaria y de colegio, por lo que domina los temas de las matemáticas, algebra, cálculo, y sus derivaciones, además química y física. Si se le dificu ... lta alguna de estas materias se los recomiendo, y si no tiene dificultad en ellas va a aprender mucho más con el Profesor Justino.
Read more
Ana maria rocha
★★★★★
Justino es un genio de profesor, el saca lo mejor de cada estudiante. Es paciente, con el mejor genio del mundo, sus comentarios le suben la autoestima a los alumnos, es siempre positivo, sus alumnos lo adoran. Mi hija toma clases con el de Física, Química y Matemáticas y Justino la ha estado acompañando hace mas de 8 años... Se lo recomiendo a cualquier estudiante pequeño o grande que necesite un refuerzo en cualquiera de los temas anteriores... ... cualquiera que sea el problema que tiene el alumno con Justino siempre saldrá triunfante y adelante... Altamente recomendado !!!
Read more
Humberto Hernández
★★★★★
Gran conocimiento que transmite con excelente detalle pedagógico. El profesor Justino, es paciente, comprensivo, firme, y disciplinado. Se toma como ejemplo.

I teach

  • Maths
    • Algebra
    • Basic Math
    • Linear Algebra
    • Trigonometry
    • Calculus
  • Physics
  • Chemistry

Languages I speak

EnglishBilingual
SpanishNative

Education

Pedagogía Profesional Universitaria, Gerencia De Producciones

Master/Postgraduate

Frequently Asked Questions

Other recommended online English teachers:

5,0

(2)

$8 /lesson

Free trial available

Hadassah J.
https://dbwf8q1mv0cee.cloudfront.net/chi/api/user/dtp/qa_po-rm3uhqyneo8wgyqibswqvme7st0.jpg/124x124cut/?v=2

Hadassah J.
Verified teacher, moderated by the Classgap team
South Africa

30 lessons

English

Speaks: English, Spanish

Good day! My name is Hadassah, it's nice to meet you, if only through this introduction. I'm an online English tutor and an in-person Mathematics and ...

View more

5,0

(1834)

$17 /lesson

Free trial available

Inmaculada
https://dbwf8q1mv0cee.cloudfront.net/chi/api/user/dtp/qtsqak2d2ugrphjx0ydxqzhfxolma_fd0.jpg/124x124cut/?v=10

Inmaculada
Verified teacher, moderated by the Classgap team
Spain

9979 lessons

English, Spanish

Speaks: Spanish, English

Hi! My name is Inmaculada and I have a Degree in English Studies and Cambridge C1 certificate in English. What I love the most is teaching English ...

View more

5,0

(3)

$14 /lesson

Free trial available

Ayelén
https://dbwf8q1mv0cee.cloudfront.net/chi/api/user/dtp/enmqckq03egd0vxgibnwsb772qovt9nj0.jpg/124x124cut/?v=2

Ayelén
Verified teacher, moderated by the Classgap team
Argentina

32 lessons

English

Speaks: Español, Inglés

🖐Hello everyone! My name is Ayelén and for the past 6 years, I have been helping my students develop their skills and gain confidence when speaking...

View more

4,9

(58)

$14 /lesson

Free trial available

Michelle
https://dbwf8q1mv0cee.cloudfront.net/chi/api/user/dtp/ijggg7_z2kjb8ndypcrxs6xb-a2puvl_0.jpg/124x124cut/?v=1

Michelle
Verified teacher, moderated by the Classgap team
South Africa

2309 lessons

English

Speaks: English

Hi my name is Michelle. I originate from Zimbabwe, where British English is taught, and later I moved to South Africa and needed to learn Afrikaans. T...

View more

Online Maths tutors

Online Physics tutors

Online Chemistry tutors

Online Algebra tutors

Online Basic Math tutors

Online Linear Algebra tutors

Icons / 48x48 / Active / Cookies

We use cookies to improve your experience

Classgap stores data, such as cookies, to ensure the basic functionality of the site, personalise content, tailor ads and measure their effectiveness, and to provide you with a better experience. By clicking "Accept", you agree to our Cookie Policy. You can also visit our Privacy Policy.

Cookie settings

A Cookie is a file that is downloaded to your computer or phone when you access a website. In our case, cookies allow us, among other things, to store and retrieve information about your browsing habits in order to offer you personalised content based on your behaviour on Classgap.

Required Cookies These cookies are necessary for you to enjoy a good experience on Classgap. They are related to the login, to be able to autofill the different forms or to be able to make the privacy changes you consider necessary. Visit our Cookie Policy or our Privacy Policy to learn more.

Cookies analytics

Show more
Show less
These cookies collect information about your browsing behaviour on Classgap. This allows us to make improvements and to provide you with information about our products that may be of interest to you.

Functional Cookies

Show more
Show less
These are Cookies that allow you to personalise your use of Classgap. They can be your own or third party cookies.

Behavioural advertising Cookies

Show more
Show less
These are cookies that store information on user behaviour obtained through continuous observation of their browsing habits, which allows a specific profile to be developed in order to display advertising based on the same.
Activate all