Si D.

What do you want to work on?

About Si D.

Subjects

Chemistry, Physics

Education

Bachelors in Engineering, General from United States Naval Academy

Masters in Chemistry, General from Case Western Reserve University

Masters in Education, General from Lynchburg College

Career Experience

Now am in retirement after decades of teaching in boarding and day schools where tutoring is a regular part of a day of helping students learn the concepts and find success.

I Love Tutoring Because

I have a real appreciation for the opportunity to make a one to one contribution to achievement and to understanding science and the beauty of how life, our world, and the universe works. Tutoring gives me the reward of daily contact with students.

Other Interests

Gardening, Web surfing

Reviews (15,086)

David

Science - Chemistry

Dec 1, 2025

service is excellent but I need more time, if i could just have 10 more minutes would be amazing, but service is above excellent already

Yesi

Science - Physics - Algebra-Based

Nov 30, 2025

He was very kind and wanted to help me understand.

Janelle

Science - Chemistry

Nov 19, 2025

very helpful very good at expalining

AmeliaRae

Science - Physics - Algebra-Based

Nov 14, 2025

He was very helpful

Demetre

Science - Physics - Algebra-Based

Nov 13, 2025

EXCELLENT

Mia

Science - Chemistry

Nov 13, 2025

this time was better

Destiny

Science - Chemistry

Nov 11, 2025

Hes the best guys you should register or schedule for him he's is the best and I love how he shows significant figures I found it really useful!!!

OliviaMayTong

Science - Chemistry

Nov 10, 2025

Didn't explain what to look in a structure

Madeliene

Science - Chemistry

Oct 28, 2025

He was very clear and concise. I appreciated how he went out of his way to explain vocabulary and its definitions with examples. Great guy for chemistry.

EnzoNicholas

Science - Physics - Algebra-Based

Oct 19, 2025

Excellent help!

Miguel

Science - Physics - Algebra-Based

Oct 19, 2025

Good tutoring session learned a lot

Taylor

Science - Physics - Algebra-Based

Oct 16, 2025

My tutor was awesome

Manal

Science - Physics - Algebra-Based

Oct 12, 2025

Really great and so convenient

Mikaila

Science - Chemistry

Oct 11, 2025

I like the way they take their time to thoroughly explain. And demostrate by giving examples.

Kailee

Science - Physics - Algebra-Based

Oct 9, 2025

It was a great and helpful experience. I started out confused and overwhelmed and now I feel confident in my work!

SophieB

Science - Chemistry

Oct 5, 2025

thank you very much for help me

Ashley

Science - Chemistry

Sep 30, 2025

I like that things were made simpler than I was making it

Hannah

Science - Chemistry

Sep 30, 2025

He has good comparisons and is patient when students are learning for the first time.

Adondis

Science - Chemistry

Sep 29, 2025

Very helpful;

Alvin

Science - Physics - Algebra-Based

Sep 21, 2025

Alot of background noise

Hannah

Science - Chemistry

Sep 18, 2025

He was really helpful and even sent me a link to a book to help me understand.

Alissa

Science - Chemistry

Sep 18, 2025

I loved how he used the voice over and really gave me different ways of doing a problem!! he was very helpful and very sweet

Hannah

Science - Chemistry

Sep 18, 2025

Si D was great

JAMIE

Science - Physics - Algebra-Based

Sep 16, 2025

He helped me understand velocity.

Navah

Science - Chemistry

Sep 16, 2025

Very good balance of helping me understand where I'm stuck and helping me get to the right direction for problem solving

Mia

Science - Chemistry

Sep 15, 2025

He really helped me go back and see if i made any mistakes

Alexis

Science - Chemistry

Sep 13, 2025

He was very kind and helpful. Just a bit slow at typing but that's okay because he was so nice

Jacob

Science - Chemistry

Sep 8, 2025

Nice to be able to see all the steps done and he didn't just give me the answer. I still had to do the work, but he helped me understand it better.

Evangeline

FP - Chemistry

Sep 2, 2025

Everyone is so nice and smart 😊😊

Payton

Science - Physics - Algebra-Based

Aug 30, 2025

This tutor spends a lot of time remembering how to do the work, so he doesn't end up teaching much.

Elliana

Science - Chemistry

Aug 29, 2025

This was really helpful and especially how I can upload my problems!!

Anabelle

Science - Chemistry

Aug 27, 2025

My tutor was very good and straight to the point

Cody

Science - Physics - Algebra-Based

Aug 16, 2025

dude man was very helpful

SophieB

Science - Physics - Algebra-Based

Jul 22, 2025

thank you

SophieB

Science - Physics - Algebra-Based

Jul 13, 2025

stay for the full hour

SophieB

Science - Physics - Algebra-Based

Jul 8, 2025

thank you

Christine

Science - Chemistry

Jul 7, 2025

Excellent tutor, very encouraging!

Jakeh

Science - Chemistry

Jul 5, 2025

It would be nice if I could copy and paste my homework question on the board.

SophieB

Science - Physics - Algebra-Based

Jul 1, 2025

thank you so much

SophieB

Science - Physics - Algebra-Based

Jun 30, 2025

thank you

HYATT

Science - Chemistry

Jun 12, 2025

Very helpful session. Tutor explained clearly and helpfully. I understood a lot by the end of the session. Overall, a very helpful session.

Kim

Science - Chemistry

Jun 6, 2025

Thank you, you did awesome!

James

Science - Chemistry

Jun 4, 2025

great star

Sebastian

Science - Chemistry

May 31, 2025

Good Tutor

Paul

Science - Chemistry

May 31, 2025

I love Si! He is so helpful in explaining and makes sure to leave room for me to attempt things and ask questions.

CRISTHIAN

FP - Physics - Algebra-Based

May 29, 2025

im very sorry my computer died

Susan

Science - Chemistry

May 28, 2025

hard to read handwriting but very good at showing and telling the steps needed to solve the equation.

VANESSA

FP - Chemistry

May 27, 2025

Helped clear some things up

D'ZURE'

FP - Physics - Algebra-Based

May 21, 2025

thanks

EROS

FP - Chemistry

May 16, 2025

Could'nt really understand his handwriting

SUMMER

FP - Chemistry

May 12, 2025

good

Debra

Science - Physics - Algebra-Based

May 5, 2025

I really did not appreciate being transferred but such is life with PHYSICS

ALAN

FP - Physics - Algebra-Based

May 1, 2025

I got the answer right then I just end it

Grace

Science - Chemistry

Apr 29, 2025

They were amazing

Luis

Science - Chemistry

Apr 24, 2025

the gentleman helped me with my problem

Muhannad

Science - Chemistry

Apr 22, 2025

Thank you so much for your help and explanation!

Ty

Science - Chemistry

Apr 16, 2025

thank you so so much!!

Jael

Science - Chemistry

Apr 9, 2025

Thank you so much! I actually can't thank you enough. I really needed to get this done, and you helped walk me through it! Thanks so much!

BRISSA

FP - Chemistry

Apr 8, 2025

I love the tutors on this program they are very patient

Sophia

Science - Chemistry

Apr 8, 2025

this tutor was patient and helpful.

Giti

Science - Chemistry

Apr 2, 2025

good tutor

Michael

Science - Chemistry

Mar 27, 2025

Good

Hailee

Science - Chemistry

Mar 26, 2025

very helpful and encouraging

Ty

Science - Chemistry

Mar 23, 2025

I really like how they don't make me feel stupid for simple questions

Michelle

Science - Chemistry

Mar 22, 2025

I have used this resource a number of times this term for chemistry and math and I am so very grateful for the service!

Jeffrey

Science - Chemistry

Mar 22, 2025

my tutor was helpful in pointing me in the right direction

Kyle

Science - Chemistry

Mar 21, 2025

It was a great tutoring session!

Fabiana

Science - Chemistry

Mar 20, 2025

amazing

Jasmine

Science - Chemistry

Mar 20, 2025

Wish I would have used this sooner! I spent far too much time trying to figure it out on my own!

CassidyRose

Science - Physics - Algebra-Based

Mar 19, 2025

sid is really cool, very helpful

Austin

Science - Chemistry

Mar 16, 2025

Helpful, was a bit unsure about one of his methods, but it turned out ok.

Kevin

Science - Chemistry

Mar 15, 2025

Great teacher! I can tell he has experience

Michael

Science - Chemistry

Mar 15, 2025

Good work, but always allow students to do the calculations unless they explicitly announce that they need to be given the answer.

Elijah

Science - Physics - Algebra-Based

Mar 15, 2025

Too slow

ethan

Science - Physics - Algebra-Based

Mar 12, 2025

Great explanations and Great method of getting the student to remember why vs just showing them the answer. Awesome job.

Michael

Science - Chemistry

Mar 8, 2025

Excellent.

Roniyah

Science - Chemistry

Mar 5, 2025

This is a really good service and you get help quickly

Anthony

FP - Chemistry

Feb 23, 2025

REALLY GOOD HE MADE IT SUPER SIMPLE

Michael

Science - Chemistry

Feb 20, 2025

Excellent.

Michael

Science - Chemistry

Feb 20, 2025

Excellent

Jose

Science - Chemistry

Feb 18, 2025

very patient and understanding

Alec

Science - Physics - Algebra-Based

Feb 15, 2025

Thank you for helping understand forces of equilibrium better. I'll now how to tackle this problem on my homework assignments

Darrell

Science - Physics - Algebra-Based

Feb 13, 2025

He's excellent to explain me carefully without wasting time to get distraction explanation because he knows everything as my professor did without teaching my class to learn about. Thank you and have a blessing day.

Luke

Science - Physics - Algebra-Based

Feb 12, 2025

He was a great help - clearly explaining the problem.

Mirjana

Science - Physics - Algebra-Based

Feb 12, 2025

The tutor was nice and gave me a new perspective. He was helpful although we didn't find a solution

Elijah

Science - Physics - Algebra-Based

Feb 8, 2025

very helpful and kind

Yasmine

Science - Physics - Algebra-Based

Feb 7, 2025

Tutor was very helpful and answered my questions!

Renee

Science - Chemistry

Feb 6, 2025

this session really reduced my anxiety level

KAYLIE

FP - Chemistry

Feb 4, 2025

Really nice and helpful

Jamarco

Science - Chemistry

Feb 1, 2025

Did a great job breaking down the topic for me

Safiyah

Science - Chemistry

Jan 30, 2025

Si is an incredible chemistry tutor straightforward, knowledgeable, and exactly what you need if you want to truly understand the subject. He has a no-nonsense approach that makes even the most difficult concepts feel manageable. Instead of overcomplicating things, he gets straight to the point, breaking everything down in a way that actually makes sense. What I appreciate most about Si is his patience and ability to adapt to different learning styles. He knows how to pinpoint where you're struggling and gives clear, practical explanations that stick. Whether it’s mastering reaction mechanisms or tackling tough problem sets, he keeps you focused and makes sure you leave each session feeling more confident. If you want a tutor who is efficient, supportive, and truly invested in your success, Si is the one to go to. Highly recommend!

MIA

FP - Physics - Algebra-Based

Jan 29, 2025

Just nice and efficient :)

Samantha

Science - Chemistry

Jan 28, 2025

helpful for a quick explanation

Scott

Science - Chemistry

Jan 27, 2025

Very helpful tutor

Hana

Science - Chemistry

Jan 21, 2025

he was a great help, he made sure I understand each and every concept! Very kind as well.

Brianna

Science - Chemistry

Jan 20, 2025

Thank you for your help! It was nie to be able to work through some problems.

Michelle

Science - Chemistry

Jan 19, 2025

Very helpful and answered all my questions.

James

Science - Chemistry

Jan 17, 2025

Avery

Science - Physics - Algebra-Based

Jan 16, 2025

Very helpful!

HYATT

Science - Chemistry

Jan 15, 2025

Very helpful session. Tutor explained clearly and helpfully. I understood a lot by the end of the session. Overall, a very helpful session.

PATRICK

FP - Chemistry

Jan 9, 2025

Awesome tutor. He really helped me out and taught me something new.

HAREL

FP - Physics - Algebra-Based

Jan 7, 2025

great tutor

Sydney

Science - Physics - Algebra-Based

Dec 13, 2024

He was good! Definitely helpful

Jael

Science - Chemistry

Dec 11, 2024

Thank you

Audrey

Science - Chemistry

Dec 10, 2024

You helped me better understand the content.

ESMERALDA

Science - Chemistry

Dec 6, 2024

Very helpful!

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