David A.

What do you want to work on?

About David A.

Subjects

Algebra, Calculus, Pre-Calculus

Education

Bachelors in Engineering, General from Universidad Nacional de Colombia

Career Experience

When I first started studying biological engineering, I discovered how truly passionate I feel about calculus and math in general. I always excelled in my classes, but sadly as I graduted, I realized that biological engineering was not the major I wanted to make my life about. I've never been afraid of starting over, so I decided to go back to university and, by the next semester, I will be starting to pursue a degree in computer science.

I Love Tutoring Because

tutoring has taught me a lot of new approaches and techniques to solve problems I wasn't aware of. I love tutoring because there's no better feeling than knowing the positive impact you are creating in students who are seeking for help, and they genuinely appreciate it. Tutoring has also helped me improve and keep up to date with all the necessary knowledge for my future courses!

Other Interests

Archery, Book collecting, Computer programming, Creative writing, Digital arts, Paintball, Swimming, Traveling, Urban exploration, Video Gaming, Volleyball, Weightlifting, Writing

Reviews (5,400)

Sehar

Math - Pre-Calculus

Jul 6, 2022

Thank you!

Fiona

Math - Calculus

Jul 2, 2022

So patient and such a great help! Helped me understand some key concepts in Calc

Abhilasha

Math - Calculus

Jun 28, 2022

great!

Kanyah

Math - Algebra

Jun 25, 2022

Great

Ryan

Math - Calculus

Jun 18, 2022

David is the type of tutor that can take a complicated and intimidating concept, and turn it into something that's so unbelievably easy, you question why you were confused in the first place. I have had the fortune of working with David multiple times today as I prep for my Calc final and I have to say that he is one of the best tutors on the platform!

Ryan

Math - Calculus

Jun 18, 2022

David was terrific and cleared up the confusion I had regarding to the problem

Ryan

Math - Calculus

Jun 18, 2022

Tutor was terrific!

Alexander

Math - Pre-Calculus

Jun 17, 2022

David was very helpful

Eriel

Math - Pre-Calculus

Jun 16, 2022

Never used this before but it was super helpful

Ashley

Math - Calculus

Jun 11, 2022

it would be awesome if the 1-hour time limit could be worked with, like maybe give both parties the option to opt-in to an extension and if both do then it keeps going? an hour is rarely long enough IMO

Nabia

Math - Pre-Calculus

Jun 9, 2022

wonderful

Thomas

Math - Calculus

Jun 7, 2022

They were very helpful and found my simple mistakes

Gabriel

Math - Calculus

Jun 4, 2022

always the goat

Miisha

Math - Pre-Calculus

May 29, 2022

My tutor was very prompt and precise with helping me solve my problem.

Hanna

Math - Pre-Calculus

May 27, 2022

Very knowledgeable and explains clearly

Grace

Math - Differential Equations

May 20, 2022

Excellent tutor - helped me work through the problem with careful guiding questions, and paid close attention to all the little details.

Kelvin

Math - Calculus

May 15, 2022

Great help!

Kelvin

Math - Calculus

May 15, 2022

Great help!

Arsalan

Math - Algebra

May 14, 2022

It would be really great if the tutor's could just be a little faster and more responsive.

Arsalan

Math - Algebra

May 14, 2022

Great tutor!

Gabriel

Math - Calculus

May 14, 2022

patient, helps me understand on a deeper level

Gabriel

Math - Calculus

May 8, 2022

the goat

Brianne

Math - Differential Equations

May 8, 2022

Very helpful and very nice!

Brianna

Math - Calculus

May 8, 2022

David was extremely helpful and a clear with assisting

Dawneen

Math - Calculus

May 7, 2022

David helped explain the concepts so I could better understand

Tonis

Math - Pre-Calculus

May 5, 2022

very helpful

Taylor

Math - Differential Equations

May 1, 2022

Honestly David, is a really great tutor. Way way way better than my actual teacher. Most of the tutors here are better than my actual teacher though.. Thanks!

Angie

Math - Differential Equations

May 1, 2022

Great tutor!

Angie

Math - Differential Equations

May 1, 2022

Great tutor!

Gabriel

Math - Calculus

Apr 30, 2022

Patient and great

GraceFelice

Math - Algebra

Apr 27, 2022

I got a little bit stumped since I was usually used to using the difference of squares method for the problem I had, but the tutor showed me how to work it out. It was actually more simple than I expected!

Salina

Math - Differential Equations

Apr 26, 2022

he helped me so much with finding a super tiny mistake in my work!! it was a perfect session!

Yismeily

Math - Calculus

Apr 24, 2022

very helpful and patient

Lujayn

Math - Algebra

Apr 23, 2022

I think it was a good session although I didn't get a clear question to ask I feel like the tutor will help me better in the future if I have like a question that is more clear to ask

CHRISTINA

Math - Calculus

Apr 23, 2022

Really good tutor!

Abhishek

Math - Pre-Calculus

Apr 20, 2022

amazing tutor! made it clear using the method I'm familiar with!

Maahi

Math - Algebra

Apr 19, 2022

Really nice!!

Michael

Math - Differential Equations

Apr 18, 2022

Good session. Took a while for me to understand what the tutor was explaining but eventually i understood the problem.

Daniel

Math - Pre-Calculus

Apr 17, 2022

I was able to list out the locations of the cosine values on the unit circle. This of course was aided through step by step solutions of the problem in question.

Katie

Math - Algebra

Apr 16, 2022

Super Helpful!

Tyler

Math - Calculus

Apr 16, 2022

Did Great

Taylor

Math - Differential Equations

Apr 16, 2022

david is amazing!

Taylor

Math - Differential Equations

Apr 10, 2022

TRULY AMAZING TUTOR ONE OF THE BEsT!

Lucy

Math - Calculus

Apr 10, 2022

was wonderful! helped explain a matter that confused me in a consice manner!

Alicia

Math - Pre-Calculus

Apr 10, 2022

They were able to help me through my problem making sure I understood everything they showed me.

GABRIAL

Math - Pre-Calculus

Apr 7, 2022

really good person. he was showing me how to use the program and i am thankful for people like everyone here

Ethan

Math - Pre-Calculus

Apr 4, 2022

I was still somewhat confused after the session.

Gabriel

Math - Calculus

Apr 3, 2022

really teaches me the concepts, super nice

James

Math - Calculus

Apr 2, 2022

Excellent service

Jeremy

Math - Differential Equations

Apr 1, 2022

Redirect

Thomas

Math - Differential Equations

Mar 28, 2022

clear instructions

Tia

Math - Pre-Calculus

Mar 28, 2022

very kind, patient and helpful

Lawson

Math - Calculus

Mar 27, 2022

Thank you so much!!!

Gabriel

Math - Calculus

Mar 27, 2022

the goat

Jayme

Math - Calculus

Mar 27, 2022

He was my favorite so far.

Caroline

Math - Pre-Calculus

Mar 26, 2022

kinda slow responses but hellped

Gabriel

Math - Calculus

Mar 25, 2022

the goat, the best, super patient and excellent teacher

Michael

Math - Differential Equations

Mar 25, 2022

patient tutor that spent quite a bit of time clarifying to make sure i understood the process. amazing experience.

Michael

Math - Differential Equations

Mar 25, 2022

Tutor was able to quickly simplify something that was overly complicated within the textbook. 20/10 experience.

Michael

Math - Algebra

Mar 22, 2022

My tutor was very nice and helpful!

Paton

Math - Pre-Calculus

Mar 22, 2022

this was really helpful. it was my first time using this site and i am very happy with it.

Gabriel

Math - Calculus

Mar 20, 2022

super patient and helpful

Deborah

Math - Pre-Calculus

Mar 19, 2022

Thanks!

Luis

Math - Pre-Calculus

Mar 13, 2022

very patient

Denise

Math - Algebra

Mar 12, 2022

I didn't understand the problem and didnt get help to walk me threw it.

Roberto

Math - Pre-Calculus

Mar 12, 2022

David walked me through, step by step, the correct way to solve an equation using the quadratic formula with a rather large square. I had skipped some steps and missed steps originally, but was guided through how to properly track them and solve using the formula correctly.

Sabrina

Math - Calculus

Mar 12, 2022

David was very encouraging and helped me identify critical steps in using the chain rule to find a derivative. I was just stuck on this one part and he was quick to help me find my errors. Thanks!!!

Thomas

Math - Differential Equations

Mar 8, 2022

used clear materials to explain

Gabriel

Math - Calculus

Mar 6, 2022

still the best

Gabriel

Math - Calculus

Mar 6, 2022

best tutor

Mano

Math - Pre-Calculus

Mar 5, 2022

This was incredibly helpful!

IfeoluwaOlusola

Math - Pre-Calculus

Mar 5, 2022

I have an understanding how conic sections - parabolas works.

John

Math - Pre-Calculus

Mar 5, 2022

David is awesome.

Paul

Math - Calculus

Mar 5, 2022

clear in guidance, helped me figure it out

Cat

Math - Calculus

Mar 5, 2022

I loved this guy - he gave me some really great tips on solving this type of problem. Very valuable.

Luis

Math - Pre-Calculus

Mar 4, 2022

Helped me get a better understanding

Sabrina

Math - Pre-Calculus

Mar 4, 2022

This was my very first experience with tutor.com and I was very satisfied. David was great!

Tihane

Math - Pre-Calculus

Mar 4, 2022

Awesome tutor! Thorough, friendly and walked me through my issues step by step!

Alexandra

Math - Differential Equations

Mar 1, 2022

very patient and explains material well

ERNA

Math - Algebra

Mar 1, 2022

Good helper

Sydney

Math - Pre-Calculus

Mar 1, 2022

I couldnt use the typing system for a little bit chich made it hard to use.

Alexander

Math - Differential Equations

Feb 28, 2022

Excellent

Gabriel

Math - Calculus

Feb 27, 2022

my boyyyy

Rebecca

Math - Pre-Calculus

Feb 27, 2022

Helped me understand where I was switching something. The way he explained it was so helpful. He really simplified things!

Korbin

Math - Pre-Calculus

Feb 26, 2022

Amazing and explained things very in depth!

JaLisa

Math - Calculus

Feb 25, 2022

great tutor, explained the concept very well

Shedrick

Math - Calculus

Feb 22, 2022

amazing.

Gabriel

Math - Calculus

Feb 20, 2022

The best tutor on here!

Jacinda

Math - Algebra

Feb 19, 2022

It helped me a lot!

Joseph

Math - Calculus

Feb 18, 2022

David clarified things quite nicely!

Elycia

Math - Pre-Calculus

Feb 17, 2022

very resourceful I like how added review and tips for me to study, patient even though I can be difficult, encouraging, doesn't make me feel less inadequate

Madison

Math - Differential Equations

Feb 17, 2022

The tutor really helped me this time make sense of it all

Angie

Math - Differential Equations

Feb 16, 2022

Great tutor!

Michael

Math - Calculus

Feb 16, 2022

David's directions and guidance was clear. David help me better understand the problem I was working on.

Victoria

Math - Pre-Calculus

Feb 15, 2022

very good

Tia

Math - Pre-Calculus

Feb 14, 2022

Very patient, kind, helpful and polite

Tia

Math - Pre-Calculus

Feb 14, 2022

Very helpful, polite and patient!

ISABELLA

Math - Pre-Calculus

Feb 13, 2022

Helpful

Kenneth

Math - Calculus

Feb 13, 2022

3excellent tutor

Seth

Math - Pre-Calculus

Feb 12, 2022

David as usual is wonderful at explaining concepts

Daniel

Math - Differential Equations

Feb 10, 2022

Was able to find the solution instantly. It was just a stupid mistake, but still! I was very impressed.

Thomas

Math - Differential Equations

Feb 8, 2022

quick response, clear instructions

Gabriel

Math - Calculus

Feb 6, 2022

Amazing, patient, detailed

Seth

Math - Pre-Calculus

Feb 6, 2022

David was knowledgeable and very helpful. He explained concepts clearly and let me solve the problems with minimal input.

Michael

Math - Calculus

Feb 5, 2022

David is a good help with identifying where I need to focus on to get the correct answer for my problem. David quickly relates the material in a way that I can see it from multiple points.

Tucker

Math - Pre-Calculus

Feb 5, 2022

good lord he had the patience of an angel. give the man a raise!

Michael

Math - Calculus

Feb 5, 2022

David did a good job of breaking down the step that I needed to understand in order for me to complete my word problem. His help gave me a better comprehension of problems like this.

Ana

Math - Pre-Calculus

Feb 1, 2022

My tutor was very helpful and I understood my problem correctly.

Kayleigh

Math - Pre-Calculus

Jan 30, 2022

It was good help just needed voice chat to communicate better.

Savannah

Math - Pre-Calculus

Jan 30, 2022

helped me with needed material understood the work way better

Taylor

Math - Differential Equations

Jan 29, 2022

David is really great!!!

Angie

Math - Differential Equations

Jan 28, 2022

Great tutor!

BERENICE

Math - Algebra

Jan 26, 2022

Really useful.

JOSE

Math - Pre-Calculus

Jan 23, 2022

Really easy to understand and I learned more than what I new before.

Kyle

Math - Algebra

Jan 22, 2022

good tutor.

Kazuko

Math - Calculus

Jan 21, 2022

The tutor is wonderful. I can understand very well after I had the session.

Damya

Math - Pre-Calculus

Jan 20, 2022

My tutor explained everything step by step and allowed me to find the answer on my own with his guidance. I definitely would give this service another try in the future. :)

Tobias

Math - Algebra

Jan 18, 2022

My chat disappeared

Amaris

Math - Calculus

Jan 16, 2022

David did a great job of pointing out which step I messed up on.

Charlene

Math - Calculus

Jan 15, 2022

David R is always patient and helpful.

Ian

Math - Pre-Calculus

Jan 14, 2022

I'm glad I can discuss and issue with a knowledgeable person at any time!

Gbenro

Math - Calculus

Jan 14, 2022

need to study more about the concept

Zayla

Math - Algebra

Jan 11, 2022

very nice

LINDSAY

Math - Calculus

Jan 10, 2022

Helps a lot :)

Ernie

Math - Pre-Calculus

Jan 9, 2022

will return after I finish the course

Charlene

Math - Calculus

Jan 9, 2022

David walked me through, step by step, identifying horizontal and vertical asymptotes. I was struggling with the process and he was patient and helped me think through the steps. I am relieved. Thank you, David. I appreciate it.

Taylor

Math - Calculus

Jan 8, 2022

Great teacher

Deborah

Math - Pre-Calculus

Jan 7, 2022

Great, thanks!

Ava

Math - Calculus

Jan 6, 2022

Very helpful taught me new concepts and resources

Tong

Math - Calculus

Jan 6, 2022

He CLARIFIED my confusion. It was great because he helped me throughout the problems and explain some mistakes.

RIANA

Math - Calculus

Jan 2, 2022

Nice tutor and checked my work frequently :)

SHERZOD

Math - Pre-Calculus

Dec 16, 2021

Awesome tutor!

Heera

Math - Pre-Calculus

Dec 16, 2021

You were so much easier to understand than my teacher. really, I am so grateful for the help.

Nicole

Math - Pre-Calculus

Dec 15, 2021

excellent tutor!

SHERLIN

Math - Algebra

Dec 15, 2021

I really appreciate the support that this program gives.

Deborah

Math - Pre-Calculus

Dec 14, 2021

Great clarification - thanks!

Maia

Math - Pre-Calculus

Dec 14, 2021

David is one of the best tutors!

Angie

Math - Pre-Calculus

Dec 13, 2021

awesome help.

Emily

Math - Algebra

Dec 12, 2021

He did a great job!

Nicholas

Math - Calculus

Dec 11, 2021

Let me do the work and helped me understand each step.

Jada

Math - Pre-Calculus

Dec 10, 2021

he was very patient and understanding

Cameron

Math - Pre-Calculus

Dec 8, 2021

I understand the concept so much better and he guided me to the right answer rather than telling me what it was so I'm actually learning!

Doryan

Math - Pre-Calculus

Dec 7, 2021

i used chat only and for a while i didnt notice the tutor asked a question and was just confused for a while but they helped a bunch with my question

ANDREW

Math - Algebra

Dec 7, 2021

Very helpful.

Haboobeker

Math - Pre-Calculus

Dec 5, 2021

Corey

Math - Differential Equations

Dec 5, 2021

Potentially my last session with tutor because I am almost finished with my course, but thank you for everything David and I hope to work with you again :)

Paul

Math - Pre-Calculus

Dec 5, 2021

the problem was written out incorrectly on the homework assignment and it was quickly spotted. after that we were good to go

Jenifer

Math - Pre-Calculus

Dec 3, 2021

Really great! I was making things way too difficult for myself, and this tutor helped clear things up.

Demo

Math - Algebra

Dec 1, 2021

my tutor was helpful and nice

Sofia

Math - Pre-Calculus

Nov 30, 2021

Very good

Jae

Math - Pre-Calculus

Nov 24, 2021

My tutor was very polite, patient, and helped me walk through my math problems without giving away the answers.

Zayla

Math - Algebra

Nov 24, 2021

very nice

Tate

Math - Differential Equations

Nov 22, 2021

David A is so great!

Josh

Math - Calculus

Nov 21, 2021

david had some mediocre advice about studying rules I already know.

Juliana

Math - Pre-Calculus

Nov 20, 2021

Paul

Math - Pre-Calculus

Nov 20, 2021

very helpful thank you

Efrain

Math - Pre-Calculus

Nov 18, 2021

The steps are explained with clarity and wants to make sure you understand the material

Keshav

Math - Pre-Calculus

Nov 17, 2021

The instructor was amazing and really helped me understand the concepts and helped me learn several approaches to solving the problem!

John

Math - Calculus

Nov 17, 2021

Very Helpful

Sierra

Math - Calculus

Nov 17, 2021

My tutor was the best tutor ever!!!!!! He was very helpful and walked me through my problem step by step which helped me understand how to do my problem better.

Eglis

Math - Algebra

Nov 17, 2021

He was really nice and took the time to help me with the home assignment.

Juan

Math - Pre-Calculus

Nov 16, 2021

helped a lot with homework today and I understand the class now!

milo

Math - Pre-Calculus

Nov 16, 2021

nice

Chad

Math - Calculus

Nov 16, 2021

Thank you so much!!

Jason

Math - Differential Equations

Nov 16, 2021

Took the time to review my work and show me a more complete solution.

Andrew

Math - Pre-Calculus

Nov 15, 2021

David did a good job of helping me to understand these systems in a concise way. I was really confused, and he quickly helped me to understand.

Kyle

Math - Calculus

Nov 15, 2021

Give this homie a raise

Heather

Math - Calculus

Nov 14, 2021

The tutors are so helpful and don't make me feel stupid. They help me understand without just giving me the answers.

Jennifer

Math - Pre-Calculus

Nov 13, 2021

just a confusing topic, did his best to help and i was very appreciated

Ashlyn

Math - Pre-Calculus

Nov 12, 2021

Before I knew how the tutoring system worked, the tutoring didn't seem as effective as it is now, for whatever reason.

Nadia

Math - Pre-Calculus

Nov 10, 2021

Really great and thorough!

Sydnie

Math - Pre-Calculus

Nov 10, 2021

very insightful

Rabia

Math - Differential Equations

Nov 10, 2021

Excellent

Sydnie

Math - Pre-Calculus

Nov 10, 2021

very helpful and easy to work with

Brittany

Math - Algebra

Nov 9, 2021

David A did help me a lot

Hugo

En Español Math - Algebra

Nov 9, 2021

My tutor David was very helpful

Cole

Math - Algebra

Nov 8, 2021

good guy

Elycia

Math - Pre-Calculus

Nov 8, 2021

very sweet, very helpful and the way he explains things but as well as lets the students do their thing is really.

Corey

Math - Differential Equations

Nov 8, 2021

none

BritneyA

Math - Pre-Calculus

Nov 8, 2021

David A was very thorough and clear with their explanations. Even had me try to solve certain parts on my own so they knew I was fully understanding the concept. Very patient and kind. Thank you so much!

Mia

Math - Algebra

Nov 5, 2021

at the beginning of the lesson I didn't understand what I was doing but after I was done I total got what I had to do

Student

Math - Pre-Calculus

Nov 4, 2021

wonderful tutor. helped me through everything, and was extremely fast!

Jada

Math - Pre-Calculus

Nov 4, 2021

He was very patient and I did not feel rushed at all. Even though I didn't understand it at the beginning he kindly explained it to me

Luis

Math - Pre-Calculus

Nov 4, 2021

Helped me check if I did my work correctly and gave me a suggestion (check my work and try not to forget a sign throat out the problem)

Jada

Math - Pre-Calculus

Nov 4, 2021

He helped me a lot and made sure I corrected my mistakes

Yansi

Math - Pre-Calculus

Nov 4, 2021

Perfect way of teaching.

Sunderland

Math - Differential Equations

Nov 3, 2021

Awesome tutor!

Emerson

Math - Calculus

Nov 3, 2021

Awesome tutor

Ethan

Math - Algebra

Nov 3, 2021

good enough

Lily

Math - Calculus

Nov 3, 2021

My tutor was really helpful and amazing

Sean

Math - Pre-Calculus

Nov 2, 2021

He made me think through the answer which was great. Thank you

Gregory

Math - Differential Equations

Nov 2, 2021

David was very helpful, and ensured that I understood where I was making my mistakes. Much appreciated.

Noach

Math - Pre-Calculus

Oct 31, 2021

Excellent!

Corey

Math - Differential Equations

Oct 31, 2021

none

Lily

Math - Calculus

Oct 31, 2021

My tutor was really helpful! i'm grateful!

Imani

Math - Differential Equations

Oct 30, 2021

Got me in touch with someone quick, they were very helpful, easy to use

Christopher

Math - Calculus

Oct 29, 2021

David A is the best there is. He's always patient, gives me confidence, and has a great personality. Hands down my #1

Allyson

Math - Calculus

Oct 28, 2021

thank you for taking the time to know what steps i was missing and review the basics before applying them to the actual problem:)

Brittney

Math - Pre-Calculus

Oct 28, 2021

Great experience with guided practice.

Jaylin

Math - Pre-Calculus

Oct 28, 2021

Very kind and helpful!

View All

Recentlyviewedcourses

TOP

Recently viewed

David A.

What do you want to work on?

About David A.

Subjects

Education

Career Experience

I Love Tutoring Because

Other Interests

Reviews (5,400)

Sehar

Fiona

Abhilasha

Kanyah

Ryan

Ryan

Ryan

Alexander

Eriel

Ashley

Nabia

Thomas

Gabriel

Miisha

Hanna

Grace

Kelvin

Kelvin

Arsalan

Arsalan

Gabriel

Gabriel

Brianne

Brianna

Dawneen

Tonis

Taylor

Angie

Angie

Gabriel

GraceFelice

Salina

Yismeily

Lujayn

CHRISTINA

Abhishek

Maahi

Michael

Daniel

Katie

Tyler

Taylor

Taylor

Lucy

Alicia

GABRIAL

Ethan

Gabriel

James

Jeremy

Thomas

Tia

Lawson

Gabriel

Jayme

Caroline

Gabriel

Michael

Michael

Michael

Paton

Gabriel

Deborah

Luis

Denise

Roberto

Sabrina

Thomas

Recently
viewed
courses