Academy
XP
106
GP
0
Level
1
ACT
XP
12
GP
0
Level
1
GRE
XP
39383
GP
300
Level
10
LSAT
XP
57
GP
0
Level
2
SAT
XP
77372
GP
2070
Level
10
SAT Achievements
  • 25 Sentence Completion Questions Answered

  • 25 Passage Based Reading Questions Answered

  • 25 Identifying Sentence Errors Questions Answered

  • 25 Student Produced Response Questions Answered

  • 25 Improving Paragraphs Questions Answered

  • Hot Steak

    87 times

  • Hot Streak

    409 times

  • 100 Questions Correct

  • Reviewer

  • Socialite

  • Study Task - Complete

  • Study Task - Bronze Medal

    3 times

  • Study Task - Platinum Medal

    3 times

  • Study Task - Silver Medal

    6 times

  • Team Player

See your SAT achievements »
GRE Achievements
  • 25 Sentence Completion Questions Answered

  • 25 Antonyms Questions Answered

  • 25 Analogies Questions Answered

  • 25 Reading Comprehension Questions Answered

  • Hot Steak

    54 times

  • Hot Streak

    216 times

  • 100 Questions Correct

  • Reviewer

  • Socialite

  • Team Player

  • Well Rounded

See your GRE achievements »
Academy Achievements
  • Hot Streak

See your Academy achievements »

David A.

Hi! My name is David and I'm a tutor with Grockit with a degree in Biology and lots of experience tutoring Chemistry, and math. Despite my love for the sciences, I'm also an avid reader-- I like to learn new words reading essays by David Foster Wallace. Grockit is a lot of fun for me too; I look forward to being able to help you. Feel free to send me any questions you may have if you get stumped and please RSVP for my classes!

Upcoming Practice Sessions

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Skill Data (updated nightly)

SAT
8096
1:37
93%
SAT Math
4511
1:53
95%
Inscribed Figures
10
2:30
100%
Direct and inverse variation
42
1:50
100%
Quadrilaterals
139
2:14
99%
Isosceles triangles
54
2:27
98%
Sets
87
1:48
97%
Factors, Multiples and Remainders
233
1:36
97%
Solving for one variable in terms of another
329
2:03
97%
Area of a polygon
143
2:27
97%
Arc Length and Sector of a Circle
73
2:12
97%
Probability and Statistics
436
1:56
97%
Slope of a line parallel and perpendicular lines
198
1:46
96%
Perimeter of a polygon
114
1:59
96%
Lines and Angles
340
1:43
96%
Equilateral triangles
48
1:55
96%
Right triangles and the Pythagorean theorem
231
2:22
96%
Percent Questions
120
2:17
96%
Exponents and Roots
534
2:02
96%
Properties of Triangles
279
1:59
96%
Qualitative behavior of graphs and functions
170
2:07
96%
Algebra and functions
2194
1:55
95%
SAT-style functions
125
2:22
95%
Geometry and measurement
1069
1:58
95%
Multiple Choice
3333
1:46
95%
Systems of linear equations and inequalities
200
2:01
95%
Properties of integers
463
1:50
95%
Operations on algebraic functions
435
1:44
95%
Graphing Linear Functions
103
1:44
95%
Graphing Quadratic Functions
151
2:08
95%
Translating from 'English to Math'
564
1:58
95%
Area of a circle
88
2:13
95%
Data interpretation
386
1:50
94%
Translations and their effects on graphs of functions
67
1:47
94%
Word Problems
1550
1:59
94%
Average / arithmetic mean
280
2:14
94%
Factoring Algebraic Expressions
145
2:12
94%
Ratios and Proportions
662
1:58
94%
Function notation and evaluation
486
2:11
94%
Prime numbers
68
1:58
94%
Three-Dimensional Solids (Volume and Surface Area)
105
2:02
93%
Inequalities
213
1:48
93%
Points and lines
304
1:56
93%
Arithmetic word problems
407
1:56
93%
Numbers and Operations
1407
1:48
93%
Student Produced Response
1178
2:13
93%
Squares
87
1:59
92%
Circumference
53
2:21
92%
Logical reasoning
528
2:06
92%
Fractions and rational numbers
358
1:48
92%
Properties of Circles
195
2:11
92%
Domain and Range
25
1:40
92%
Sequences
193
2:05
91%
Counting problems
251
1:59
90%
Number lines
150
1:40
90%
Absolute value
72
2:05
85%
Show skills with fewer than 4 questions answered
SAT Writing
2394
1:14
91%
Participles
247
1:16
96%
IP: Drawing Conclusions
26
1:42
96%
Fragments and Run-ons
182
1:18
95%
Sentence structure
63
1:22
94%
Adjective/adverb confusion
156
1:03
94%
Modifiers
603
1:19
94%
Noun/verb agreement
375
1:11
94%
Word choice
570
1:11
93%
Identifying Sentence Errors
949
1:06
93%
Pronoun/antecedent agreement
367
1:09
93%
Conjunctions
330
1:09
93%
Verb forms and tense
756
1:08
92%
Pronoun Ambiguity
163
1:13
92%
Idioms
758
1:11
92%
IP: Inserting or Removing Sentences
38
1:35
92%
Excessive Wordiness and Redundancy
226
1:18
92%
Punctuation
84
1:23
92%
Improving Sentences
1198
1:17
91%
Gerunds
105
1:16
90%
Relative pronouns and clauses
252
1:11
88%
Restrictive and Non-Restrictive Clauses
77
1:08
88%
Comparisons
310
1:14
88%
IP: Development of Ideas
93
1:37
87%
IP: Organization of Ideas
80
1:34
86%
IP: 'Except', 'Not' or 'Least' Questions
14
1:32
86%
Parallel Structure
405
1:18
86%
Improving Paragraphs
247
1:36
85%
IP: Improving or Revising Sentences
150
1:37
81%
IP: Paragraph Structure
23
1:31
78%
Show skills with fewer than 4 questions answered
SAT Reading
1191
1:20
92%
RC: Structural Agreement
19
1:47
100%
Sentence Completion
590
0:56
98%
SC: One Blank
334
0:48
98%
SC: Two Blanks
256
1:07
97%
SC: Difficult Vocabulary
342
0:57
97%
RC: Structural Contrast
32
2:01
94%
RC: Main Idea
28
1:52
93%
RC: Vocabulary in Context
73
1:24
90%
RC: Suggestions and Inferences
163
1:47
90%
RC: 2 Long Passages
89
1:34
89%
RC: 1 Short Passage
57
1:17
89%
RC: Author's Purpose or Method
109
1:41
88%
Passage Based Reading
601
1:43
87%
RC: 1 Long Passage
372
1:49
87%
RC: 2 Short Passages
83
1:45
86%
RC: Order and Organization of Events and Ideas
95
1:51
86%
RC: Interpreting Facts and Details in Context
207
1:41
86%
RC: Author's Tone or Attitude
36
1:45
78%
RC: Analogies
5
2:00
60%
RC: Assumptions
6
1:53
50%
Show skills with fewer than 4 questions answered

TestimonialsWrite a Testimonial

Sundas

after 144 questions and roughly 7.5 hours with David, Sundas said:

David is the best math tutor on grockit! I always have fun in my lessons with him and learn a whole lot. He explains with detail until you understand the question completely. Thanks for your help! =)
Notsand

after 100 questions and roughly 4 hours with David, Notsand said:

David is an awesome tutor! Its always fun working and learning with him :) He's very quick at solving mathematics problems and he explains the question by giving concrete logic which never washes away from my mind.Thnx for ur help David! U rock :D
Arag B.

after 65 questions and roughly 3 hours with David, Arag said:

Amazing tutor, he really improved my vocab, thank you very much!!
Akhil G.

after 64 questions and roughly 1.5 hours with David, Akhil said:

David is a great teacher. He is really supportive and explains the answer in a clear and coherent manner. He is also fun to talk too when you are working on the problems. He is a great math teacher, so if you are stuck on math definitely look for him -- although I'm sure he is just as good at Reading and Writing.
edwin

after 57 questions and roughly 2 hours with David, edwin said:

He is a great tutor!
Tiffany R.

after 55 questions and roughly 3 hours with David, Tiffany said:

David is a great tutor! He is very patient with his students and is there every step along the way. He gives you examples, pointers, and tips that will not only help you with the problem at hand but with future SAT questions. He not only explains the processes involved in solving the questions, but why they are being performed. David helps you identify the logic and reason behind the questions. Thanks for all the help and I will always RSVP for your classes!
amber p.

after 55 questions and roughly 3.5 hours with David, amber said:

David is the best tutor he is so friendly that he feels to be a real friend. The way he explains is his way. He is the best........
Ashritha R.

after 44 questions and roughly 2 hours with David, Ashritha said:

firstly...i like to thnq....u r awesome man.... u really helped me alot...first i thought u r a student like me.I opened ur profile...then i got to know about you.... your way of explaining the answer is also good.....thnq so much...:)
Serch

after 39 questions and roughly 2 hours with David, Serch said:

Great teacher!!
Matt D.

after 34 questions and roughly 1 hours with David, Matt said:

cool guy, great math tutor 5*****
Katrina B.

after 30 questions and roughly 1.5 hours with David, Katrina said:

David is a terrific, helpful tutor. He explained the problems I didn't understand, and wasn't always talking about math. I recall Skateboarding, medicine, and even photosynthesis! No seriously, David is remarkably exceptional tutor. Thanks, David! I hope to study with you again.
Eddie E.

after 24 questions and roughly 1 hours with David, Eddie said:

He was extremely good at breaking down everything. He made sure you got it while giving you support. He also made sure that he wouldn't move on until he made sure that you understood. GREAT TUTOR!
mitul g.

after 22 questions and 35 minutes with David, mitul said:

great teacher! i loved his presence in the game he indulges in every problem being faced thank u sir
Josmar R.

after 21 questions and roughly 1.5 hours with David, Josmar said:

Hey david well I wanna that you help me for practicing to SAT Can you help me.? I will be here every day since 10am well bye thank
pratiti G.

after 20 questions and roughly 1.5 hours with David, pratiti said:

He is an amazing touter! very patient and good at explaining things! hopefully see you around!
Briget A.

after 11 questions and 37 minutes with David, Briget said:

Since im new he was very understanding and helped more then anyone ever on here. He was patient and now i feel more confidant
Poon P.

after 11 questions and 35 minutes with David, Poon said:

He gives a good tactics to crush SAT Maths Thanks a lot
Oswaldo T.

after 11 questions and 30 minutes with David, Oswaldo said:

Its easy to understand him, He explain step by step any kind of problem¡!¡!¡!
Amrendra M.

after 7 questions and 17 minutes with David, Amrendra said:

He is really fantastic tutor. I like his ways of solving and teaching method. Amii
Nikhita J.

after 6 questions and 26 minutes with David, Nikhita said:

David ammons was a very helpful person! Thank you, and Grockit should be proud to have such a good tutor who connects with all of us so efficiently....!
jena j.

after 4 questions and 12 minutes with David, jena said:

even though you were not there long, you helped me out alot. you made everything seem so simple and easy. you also clarified the answer so magnificently with out all the extra nonsence. thank you very much and im looking forward to our ext session!

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