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 (14,904)

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!

Michael

Science - Chemistry

Dec 5, 2024

Excellent.

Mariah

Science - Physics - Algebra-Based

Dec 4, 2024

Very nice

Michael

Science - Chemistry

Dec 3, 2024

Excellent.

DAYLNN

FP - Chemistry

Dec 2, 2024

yes

DIEGO

FP - Chemistry

Dec 1, 2024

Very helpful

RUBY

FP - Chemistry

Dec 1, 2024

I understand that there is a voice option for these sessions, but I think there needs to be a way for the chatting ones to be quicker. Often times, I'm sitting waiting for my tutor to type something for 3+ minutes which takes a lot of time out of each session. Maybe having an option for them to use their voice to type and then send it?

Edwina

Science - Chemistry

Nov 26, 2024

Thanks to Sid.

Indra

Science - Chemistry

Nov 26, 2024

Good! But better mic quality would have made it easier.

Fajar

Science - Chemistry

Nov 25, 2024

amaazing and awesome

Michael

Science - Chemistry

Nov 20, 2024

Excellent.

Ronald

Science - Physics - Algebra-Based

Nov 19, 2024

He helped me understand the problem and gave me a MUCH less difficult way to solve a problem compared to my professor

ELIJAH

FP - Physics - Algebra-Based

Nov 18, 2024

Great guy something I would like to add he's wonderful and noses stuff

Michael

Science - Chemistry

Nov 15, 2024

Excellent.

William

Science - Chemistry

Nov 13, 2024

cool tutor

Michael

Science - Chemistry

Nov 13, 2024

Excellent.

Kay

Science - Chemistry

Nov 10, 2024

Great help!

Linda

Science - Chemistry

Oct 29, 2024

There was tv on in the background and it was distracting.

Advait

Science - Physics - Algebra-Based

Oct 28, 2024

Extremely Helpful made difficult topics seem like a breeze.

Melissa

Science - Chemistry

Oct 27, 2024

Si was very helpful and my brain needed LOTS of chemistry explanations.... it helped me SOOOO much!

Christopher

Science - Physics - Algebra-Based

Oct 25, 2024

Si is a Great tutor

Jesus

Science - Chemistry

Oct 24, 2024

very knowledgeable and willing to teach

Khawla

Science - Chemistry

Oct 21, 2024

great teacher

ANDREA

Science - Chemistry

Oct 20, 2024

He wasn't even sure if it was right

Mallory

Science - Chemistry

Oct 20, 2024

Very helpful explanations and information!!

Jesus

Science - Chemistry

Oct 19, 2024

very knowledgeable

Robert

Science - Chemistry

Oct 19, 2024

Thank you

MICHAEL

FP - Physics - Algebra-Based

Oct 18, 2024

make the board bigger

HAREL

FP - Physics - Algebra-Based

Oct 17, 2024

great tutor!

Michael

Science - Chemistry

Oct 17, 2024

Excellent and informative.

Nicole

Science - Chemistry

Oct 15, 2024

Si D was very patient with me and walked me through the steps without just giving me the answer, so I feel like I can set up a stoichiometry equation now.

HAREL

FP - Physics - Algebra-Based

Oct 13, 2024

Great tutor learned the concepts quickly and effectively

Michael

Science - Chemistry

Oct 12, 2024

Excellent.

Sophia

Science - Chemistry

Oct 9, 2024

The session was a tad slow but otherwise it was perfect!

Zory

Science - Chemistry

Oct 6, 2024

Great tutor!

Durwood

Science - Physics - Algebra-Based

Oct 5, 2024

Very easy to understand. Used some nice ideas to explain his concepts.

ZEYD

FP - Chemistry

Oct 4, 2024

This tutor is excellent. Helped me discover a page on my chemistry textbook that I wasn't aware of which helped with whatever trouble I was facing.

Tucker

Science - Chemistry

Oct 3, 2024

Very helpful

Maria

Science - Chemistry

Oct 2, 2024

Excellent!

Michael

Science - Chemistry

Oct 1, 2024

Excellent.

GRISEL

FP - Chemistry

Sep 30, 2024

He was polite and helped me a lot with my confidence about my answers.

BRANDEL

FP - Chemistry

Sep 30, 2024

Tutor explained good

JOSHUA

FP - Chemistry

Sep 30, 2024

The tutor was kind and very helpful. I would recommend this to others.

Chioma

Science - Physics - Algebra-Based

Sep 29, 2024

He so nice, he explains physics so better step to step

YARITZA

FP - Physics - Algebra-Based

Sep 29, 2024

Great

YARITZA

FP - Physics - Algebra-Based

Sep 29, 2024

great

Samantha

Science - Chemistry

Sep 28, 2024

My tutor was a blessing!

sarai

Science - Chemistry

Sep 24, 2024

best of the best keep sending me this guy

PAOLA

FP - Chemistry

Sep 23, 2024

ummm this session went by real fast. I needed help on 2 questions, they helped with the first part on one of the questions and then ended the session

Anna

Science - Chemistry

Sep 23, 2024

Good help!

Ruby

Science - Chemistry

Sep 22, 2024

Really good

Hunter

Science - Physics - Algebra-Based

Sep 19, 2024

Perfect

AVA

FP - Chemistry

Sep 17, 2024

Great at helping to understand concepts!

Kasanny

Science - Chemistry

Sep 13, 2024

great at explaining! Thank you so much Si !

Jason

Science - Chemistry

Sep 10, 2024

Great

Tucker

Science - Chemistry

Sep 9, 2024

none

Riyan

Science - Chemistry

Sep 9, 2024

Really kind and very helpful.

Candyce

Science - Chemistry

Sep 9, 2024

SI D was an awesome tutor! They need to add the ability to speak with the tutors.

Kimberly

Science - Physics - Algebra-Based

Sep 9, 2024

excellent tutor. very patient and able to break down concepts in a way I could understand them.

Hunter

Science - Physics - Algebra-Based

Sep 8, 2024

Perfect! Very clarifying

Travonsve

Science - Chemistry

Sep 8, 2024

He was a very patient gentleman. He made me more comfortable with the topic at hand. 5 out of 5 Stars. Thanks Sir!

KAYLEE

FP - Physics - Algebra-Based

Sep 7, 2024

Thank you saved me hours of stress.

Tammy

Science - Chemistry

Sep 7, 2024

excellent

sarai

Science - Chemistry

Sep 4, 2024

best of the best improvements in just a day

Vanessa

Science - Chemistry

Aug 30, 2024

He was very nice and gave me great help and new ways of thinking. Thank you!

Katie

Science - Physics - Algebra-Based

Aug 29, 2024

Mr. Si was very helpful and nice. He did a great job at helping me with my homework!

Travis

Science - Physics - Algebra-Based

Aug 26, 2024

He's a great Help

David

Science - Physics - Algebra-Based

Aug 25, 2024

At first I feel stressed to connect with a tutor because I was worried that I might need them to explain a lot, but the tutor I got showed a lot of patience

Roxanne

Science - Chemistry

Aug 8, 2024

Very knowledgable.

Sarah

Science - Physics - Algebra-Based

Aug 7, 2024

Great at explaining

ANDREW

FP - Chemistry

Aug 7, 2024

Very helpful, helped me understand the question and reach the answer.

Joseph

Science - Physics - Algebra-Based

Jul 31, 2024

really good, helped me get through the problem very quickly.

Madina

Science - Chemistry

Jul 30, 2024

Great tutor. Encouraging. Straight to the point.

Jayson

Science - Physics - Algebra-Based

Jul 27, 2024

Thanks for the help

Alyssa

Science - Physics - Algebra-Based

Jul 24, 2024

The tutor helped me with the beginning of my problem but then left the session abruptly due to a personal situation. I did not get the help I needed.

Stephen

Science - Chemistry

Jul 22, 2024

Very good tutor!

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