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Math, Stats & Test Prep Teacher: Master's Educator
Rex D.

4.9 (9 ratings)

25 hours tutoring

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About Rex

Bio

Struggling to keep up with math, test prep, or coursework? You don't have to tackle it alone. I am Rex, a veteran high school math teacher and College Board AP Statistics Exam Reader with over 10 years of classroom experience. Whether you are preparing for high-stakes exams or trying to master difficult concepts, I specialize in breaking complex material down into clear, manageable steps so students don't just pass, but build real confidence and academic momentum.

Holding a Master of Arts...

Struggling to keep up with math, test prep, or coursework? You don't have to tackle it alone. I am Rex, a veteran high school math teacher and College Board AP Statistics Exam Reader with over 10 years of classroom experience. Whether you are preparing for high-stakes exams or trying to master difficult concepts, I specialize in breaking complex material down into clear, manageable steps so students don't just pass, but build real confidence and academic momentum.

Holding a Master of Arts in Modern European History and Arizona Standard Professional Secondary certifications in Mathematics, English, History, and Political Science, my expertise spans both STEM and the humanities. From Algebra, Geometry, and AP Statistics to SAT/ACT math and science, essay proofreading, and AP history, I help students conquer their most challenging subjects.

My approach is practical, patient, and tailored to each student's unique learning style. Send me a message detailing what you're working on, and let's get started on reaching your goals.

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Education

University of Arizona
History
University of Arizona
Masters
Pima Community College
Other
  • Licensed teacher

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Approved Subjects

ACT English

ACT English

As an Arizona state-certified secondary educator with over 10 years of classroom experience, I provide expert instruction in ACT English preparation. I specialize in breaking down complex grammatical rules, rhetorical skills, punctuation conventions, and sentence structure into clear, manageable steps. My patient and structured approach helps students clear up confusion, build solid foundational language skills, and master test-taking strategies with confidence. I am committed to creating a supportive learning environment where students can conquer the English section and achieve their target scores.
ACT Math

ACT Math

Backed by more than ten years of secondary math teaching experience, I offer comprehensive tutoring designed to make ACT Math approachable and manageable. I focus on strengthening core mathematical reasoning while teaching efficient pacing techniques to help students beat the clock on test day. Every session is structured to address specific student roadblocks and replace frustration with clarity. I take pride in helping learners develop the critical thinking skills necessary to excel on the ACT and in all future coursework.
ACT Reading

ACT Reading

Drawing on a decade of experience teaching secondary coursework and test preparation, I help students navigate the core competencies tested on the ACT Reading exam. My teaching style cuts straight through abstract jargon by utilizing targeted strategies for close reading, information extraction, and efficient time management. Whether a student is struggling with complex prose fiction or social science passages, I provide targeted, step-by-step guidance tailored to individual learning styles. My goal is to transform test anxiety into lasting competence and academic success.
ACT Science

ACT Science

As an Arizona state-certified secondary mathematics educator with over 10 years of classroom experience, I bring a rigorous, data-driven approach to ACT Science preparation. I specialize in teaching students how to rapidly interpret complex graphs, experimental summaries, and conflicting viewpoints without getting bogged down by unnecessary scientific jargon. My structured and patient coaching style helps students master pacing, identify key trends, and eliminate careless errors. Whether you are looking to boost your composite score or fine-tune your test-taking strategy, I provide personalized guidance tailored to your specific academic goals.
Algebra 1

Algebra 1

Backed by more than ten years of secondary math teaching experience, I offer comprehensive tutoring designed to make Algebra 1 intuitive and approachable. I focus on strengthening foundational knowledge while teaching efficient strategies for solving complex equations, word problems, and graphing tasks. Every session is structured to address specific student roadblocks and replace frustration with clarity. I take pride in helping learners develop the critical thinking skills necessary to excel in all levels of high school mathematics.
Algebra 2

Algebra 2

As an Arizona state-certified secondary mathematics educator with over 10 years of classroom experience, I provide expert instruction in Algebra 2. I specialize in breaking down complex concepts like polynomial functions, logarithmic equations, rational expressions, and complex numbers into clear, manageable steps using the TI-84 graphing calculator. My patient and structured approach helps students clear up confusion, build solid analytical skills, and master problem-solving with confidence. I am committed to creating a supportive learning environment where students can conquer advanced algebraic principles and achieve their academic goals.
American History

American History

Holding a Master’s degree in History from the University of Arizona and a state teaching credential, I provide expert guidance across all eras of American history. I work closely with students to demystify complex historical timelines, connect cause-and-effect relationships, and tackle rigorous writing assignments with precision. My patient, individualized tutoring sessions empower learners to overcome academic hurdles, ace their history courses, and build lasting analytical confidence.
Anthropology

Anthropology

With a strong academic foundation including graduate-level study in cultural anthropology, I offer deep insight into human societies and cultural evolution. My background spans specific regional studies and classical art and architecture, providing students with a well-rounded perspective on the discipline. I am passionate about helping students master ethnographic concepts and excel in their social science curriculum.
Archaeology

Archaeology

As an Arizona state-certified educator with a Master of Arts degree from the University of Arizona, I bring rigorous academic training to the study of archaeology and ancient civilizations. My coursework includes multiple upper-division classes focusing on archaeology, ancient technology, and material art, with a particular emphasis on the ancient Greek, Roman, and Mediterranean worlds. I specialize in helping students navigate complex historical and material evidence, connecting artifacts and ancient systems to broader cultural contexts. My structured and engaging tutoring approach is designed to foster critical thinking, deepen textual and material comprehension, and support every student's academic success.
ASVAB

ASVAB

As an Arizona state-certified secondary educator with over 10 years of professional classroom experience, I provide comprehensive, targeted preparation for all sections of the ASVAB. I specialize in breaking down the core academic components, including mathematics knowledge, arithmetic reasoning, and verbal skills, into clear, manageable steps that build lasting test-taking confidence. My structured, individualized approach helps candidates identify and close knowledge gaps quickly, ensuring they achieve the AFQT scores required to qualify for their desired military career paths.
Common Core

Common Core

As a state-certified high school teacher with over 10 years of classroom instruction experience, I have extensive expertise in designing and delivering Common Core-aligned curricula across Mathematics, English Language Arts, and Social Studies. I specialize in translating complex standards into clear, step-by-step concepts that help students build deep conceptual understanding rather than relying on simple memorization. By aligning personalized practice directly with state proficiency expectations, I help learners fill foundational gaps and succeed in their coursework.
Data Science

Data Science

As an Arizona state-certified secondary mathematics educator with over 10 years of classroom experience, I bring deep expertise in statistical reasoning and data analysis. My background includes years of professional service evaluating national AP Statistics exams, giving me precise insight into how students master data modeling, probability, and quantitative interpretation. I specialize in breaking down complex data sets and analytical concepts into clear, digestible steps. My structured, student-centered approach is designed to build technical confidence, strengthen analytical skills, and ensure academic success.
Elementary Math

Elementary Math

Backed by more than ten years of secondary math teaching experience, I offer comprehensive tutoring designed to make elementary mathematics intuitive and approachable. I focus on strengthening core computational skills while teaching effective strategies for tackling multi-step problems and word exercises. Every session is structured to address specific student roadblocks and replace frustration with clarity. I take pride in helping learners develop the critical thinking skills and self-assurance necessary to excel in all future math coursework.
English

English

As an Arizona state-certified secondary educator holding a Master of Arts degree from the University of Arizona and an official English endorsement, I bring over a decade of classroom experience to English tutoring. I specialize in helping students master analytical reading, essay composition, grammar mechanics, and ACT ELA test preparation. My teaching philosophy focuses on fostering critical thinking and clear communication so learners move beyond rote memorization and truly engage with texts. I provide a supportive, structured environment designed to build academic confidence and drive measurable improvement.
European History

European History

Drawing on advanced graduate training in Modern European History from the University of Arizona, I offer comprehensive tutoring designed to make European history engaging and accessible. My teaching approach cuts straight through abstract confusion by breaking down major historical movements, socio-political shifts, and thematic developments into clear, structured concepts. I work closely with students to strengthen essay-writing skills, analytical reasoning, and exam preparation. Every session is structured to address specific coursework challenges and build lasting academic confidence.
GED

GED

Backed by more than ten years of professional teaching experience with a strong focus on alternative education, credit recovery, and targeted intervention, I guide students step-by-step through every component of the GED. Whether a learner is struggling with high-stakes math or looking to polish their analytical and communication skills, I provide a supportive, judgment-free environment designed to accelerate progress. My mission is to build lasting foundational competence so students don't just pass the test, but step forward with lifelong academic self-assurance.
General Music

General Music

Drawing on 26 years of personal performance expertise and a robust background in education, I provide expert instruction in general music, woodwinds, keyboard instruments, and percussion. My teaching style bridges technical proficiency with musical expression, helping students master everything from breath support and fingering to complex rhythm and sight-reading. Every lesson is designed to address individual learning needs, ensuring students develop a deep, intuitive understanding of music theory and performance. My goal is to inspire lifelong musical engagement and steady, measurable progress for every learner.
Geography

Geography

Drawing on advanced university training in the social sciences from the University of Arizona, I offer comprehensive tutoring designed to make geography engaging and accessible. My teaching approach cuts straight through abstract confusion by breaking down spatial patterns, environmental interactions, and cultural landscapes into clear, structured concepts. I work closely with students to strengthen map interpretation, critical reasoning, and exam preparation. Every session is structured to address specific coursework challenges and build lasting academic confidence.
Geometry

Geometry

As an Arizona state-certified secondary mathematics educator with over 10 years of classroom experience, I provide expert instruction in high school geometry. I specialize in breaking down complex topics like spatial reasoning, proofs, transformations, and coordinate geometry into clear, manageable steps using the TI-84 graphing calculator. My patient and structured approach helps students clear up confusion, build solid foundational skills, and master problem-solving with confidence. I am committed to creating a supportive learning environment where students can conquer challenging geometric theorems and achieve their academic goals.
Government & Politics

Government & Politics

With over a decade of experience as a certified secondary educator and advanced academic training from the University of Arizona, I help students conquer the challenges of high school and introductory college government courses. My tutoring sessions break down intricate topics like constitutional law, federalism, and political behavior into clear, manageable concepts. I emphasize analytical reasoning and exam strategies so students can tackle essay prompts and multiple-choice questions with absolute confidence. Together, we will build a solid foundation of knowledge that turns a stressful subject into an engaging and successful academic experience.
Grammar

Grammar

As a state-certified secondary educator with a Master’s degree from the University of Arizona and an approved teaching area in English, I bring extensive classroom experience to mastering grammar and syntax. My instructional approach breaks down complex rules regarding sentence structure, punctuation, and mechanics into clear, actionable concepts that students can easily apply. Whether reviewing foundational mechanics or polishing advanced compositions, I focus on building student confidence and precision in written communication. Every session is tailored to individual learning needs, ensuring students develop the technical clarity required for academic and professional success.
GRE

GRE

Backed by a decade of professional teaching experience and advanced graduate training, I help graduate school applicants conquer the challenges of the GRE. I work closely with students to demystify tricky quantitative problem types, refine advanced reading comprehension, and sharpen essay-writing frameworks under timed conditions. My patient, analytical coaching style is designed to reduce test anxiety, strengthen foundational core skills, and secure top-tier scores. Every session is customized to match your specific academic background and graduate admissions goals.
Microsoft Excel

Microsoft Excel

Drawing on a decade of professional teaching experience and extensive work with numerical data, I offer expert tutoring in Microsoft Excel. My instruction focuses on streamlining workflow efficiency, mastering advanced formula logic, and transforming raw numbers into meaningful visual reports. I work closely with learners to remove software frustration and replace it with practical, job-ready spreadsheet competencies. Every session is tailored to your unique learning pace, ensuring you gain the technical mastery needed to succeed in academics or the workplace.
Microsoft Outlook

Microsoft Outlook

With over a decade of high-volume experience, I specialize in transforming Microsoft Outlook from an overwhelming inbox into a streamlined productivity hub. I provide expert instruction on advanced calendar management, automated rules, and organizational workflows that help users reclaim their time. My approach focuses on practical, real-world efficiency to ensure you can navigate both the desktop and web versions with total confidence.
Microsoft PowerPoint

Microsoft PowerPoint

With over ten years of experience as a secondary classroom educator and deep familiarity with digital learning environments, I help learners master Microsoft PowerPoint from the ground up. My lessons emphasize structural clarity, effective visual hierarchy, and efficient software navigation so students can build professional presentations with ease. By focusing on practical design strategies and clear organization, I help learners eliminate clutter and present their ideas with absolute confidence. Together, we transform slide design into a seamless, creative, and stress-free process.
Microsoft Word

Microsoft Word

As a veteran high school educator with a Master of Arts, I have spent over a decade using Microsoft Word to create professional curricula, technical handouts, and complex academic documents. My expertise extends beyond basic typing to include advanced formatting, mail merges, and the integration of mathematical notation—a skill set honed through years of teaching AP Statistics. I specialize in helping students master the technical features of Word while developing a clean, professional aesthetic for their own academic and professional work. I bring a patient, teacher-centered approach to every session, ensuring you feel confident navigating even the most advanced layout tools.
Music Theory

Music Theory

As a classically trained musician and state-certified educator, I bring a practical, multi-instrumental perspective to Music Theory. I am an active organist and have spent years mastering a diverse range of instruments, including the piano, saxophone, clarinet, and flute. My journey began with the tenor sax in middle school, and by gradually adding new instruments over the years, I developed a deep, intuitive understanding of how musical structures and theory apply across different voices and clefs. Whether you are looking to understand the mechanics of a score or the logic behind a composition, I combine my classroom teaching experience with a lifelong passion for performance to make theory feel both accessible and relevant.
Political Science

Political Science

As a state-certified secondary educator with an M.A. in History, I bring a deep academic background to my Political Science instruction, having passed the AEPA Political Science/American Government exam with a focus on political thought and comparative government. My expertise is rooted in advanced coursework from the University of Arizona, where I studied complex global topics including comparative political revolutions, the history of anarchism in Europe, and 20th-century Middle Eastern politics. Beyond pure theory, I have a decade of experience in the classroom, which has shaped my ability to make dense political concepts accessible and engaging for students of all levels. I am passionate about helping students develop the critical thinking skills necessary to analyze historical and modern political systems with both intellectual rigor and curiosity.
Prealgebra

Prealgebra

With over ten years of experience teaching secondary mathematics in public high schools, I specialize in helping students master the critical transition into algebraic thinking. My lessons use targeted, logical explanations to simplify fractions, negative numbers, proportions, and multi-step equations without relying on unnecessary gadgets. I emphasize core computational mechanics and critical thinking strategies to ensure students build lasting mathematical self-sufficiency. Together, we establish a robust foundation that transforms a challenging subject into a smooth and successful learning experience.
Probability

Probability

As an Arizona state-certified secondary mathematics educator with over 10 years of classroom experience and previous service as an AP Statistics Reader, I provide expert instruction in probability. I specialize in breaking down complex concepts like conditional probability, combinatorics, discrete probability distributions, and random variables into clear, manageable steps using the TI-84 graphing calculator. My patient and structured approach helps students clear up confusion, build solid analytical skills, and master problem-solving with confidence. I am committed to creating a supportive learning environment where students can conquer challenging mathematical principles and achieve their academic goals.
Proofreading

Proofreading

As a state-certified secondary teacher with a Master’s degree and over 10 years of classroom instruction experience, I specialize in teaching students line-by-line proofreading and editing skills. I help writers identify and correct mechanical errors, including punctuation, subject-verb agreement, modifier placement, and sentence structure inconsistencies. Rather than simply fixing mistakes for students, I teach actionable self-editing strategies so they can independently catch errors, refine tone, and produce polished, professional writing.
PSAT

PSAT

Holding a secondary teaching certificate with approved areas in mathematics and English, I bring extensive classroom experience to helping students conquer standardized assessments like the PSAT. My tutoring methodology cuts through confusing test jargon by teaching clear, repeatable strategies for tackling complex math problems and critical reading questions. I help learners understand the underlying logic of the exam, manage test-day pacing, and eliminate careless errors through systematic review. Students receive individualized guidance tailored to their specific learning needs, ensuring they walk into the test center fully prepared and confident.
Reading

Reading

As a state-certified secondary educator with a Master’s degree from the University of Arizona and an approved teaching area in English, I bring extensive classroom experience to developing advanced reading comprehension and critical analysis skills. My instructional methodology focuses on moving beyond surface-level decoding so students can genuinely dissect text structures, evaluate arguments, and synthesize complex information. Whether preparing for standardized assessments or strengthening foundational literacy, I provide clear, step-by-step strategies tailored to each learner's needs. I am passionate about fostering independent, confident readers who approach texts with deep intellectual engagement and absolute clarity.
SAT Math

SAT Math

With over ten years of experience teaching secondary mathematics and a deep background in national assessment standards from my work with the College Board, I provide expert preparation for the SAT Math section. My lessons combine thorough content review with practical test-taking strategies that teach students how to manage time and beat tricky word problems. I focus on building student self-sufficiency by reinforcing foundational math principles and providing structured practice tailored to individual learning needs. Together, we turn test preparation into a clear, stress-free path to academic success.
SAT Reading

SAT Reading

With over ten years of experience as a secondary classroom educator and advanced academic training from the University of Arizona, I specialize in preparing students for the verbal demands of the SAT. My lessons combine rigorous textual analysis with practical test-taking strategies designed to improve reading speed, accuracy, and overall score performance. I focus on developing student self-sufficiency by teaching structured frameworks for evaluating evidence and navigating complex literary and informational passages. Together, we build a solid foundation of analytical skills that ensures test-day success.
Saxophone

Saxophone

With years of dedicated ensemble experience spanning concert bands, jazz bands, marching bands, and musical theater pit orchestras from middle school through college, I offer comprehensive guidance for saxophone students. My musical background includes earning first chair in the All-Region Northeast Arizona Honor Band and selection for the All-State Elementary Honor Band, alongside serving as saxophone section leader during my junior and senior years of high school. I specialize in teaching soprano and tenor saxophone, emphasizing the vital importance of consistent practice habits, proper embouchure, tone production, and rhythm. Whether you are preparing for auditions or looking to build fundamental music skills, I provide structured, patient instruction to help you reach your musical goals.
Social Studies

Social Studies

Social Studies has always been my first love, and I have dedicated my academic career to mastering the complexities of our shared history and political systems. With a Master of Arts in History and state certification in History and Political Science, I offer students a deep, research-based perspective on everything from modern European revolutions to the cultural history of the Mediterranean. My decade of experience in the classroom has taught me how to transform dense primary sources and complex global events into engaging, culturally-responsive lessons that encourage intellectual curiosity. I am passionate about helping students see themselves in the narrative of history, fostering the critical thinking skills they need to navigate and understand the world around them today.
Statistics

Statistics

Backed by more than ten years of secondary math teaching experience and professional evaluation work with national AP Statistics exams, I offer comprehensive tutoring designed to make statistics intuitive and approachable. I focus on strengthening foundational reasoning while teaching efficient strategies for solving complex experimental designs, regression analysis, and hypothesis tests. Every session is structured to address specific student roadblocks and replace frustration with clarity. I take pride in helping learners develop the critical thinking skills necessary to excel in all levels of high school and college-prep statistics.
Study Skills

Study Skills

With ten years of experience as a certified high school teacher, I have helped hundreds of students move beyond rote memorization to master executive function and active learning strategies. I specialize in teaching students how to organize complex information, manage their time effectively, and utilize "meta-cognition" to identify exactly what they don't yet understand. My background as an AP Reader gives me a unique perspective on how to tackle high-stakes testing anxiety through proven preparation techniques and precise academic goal-setting. I am passionate about providing students with a personalized toolkit that transforms their study habits into a sustainable system for lifelong academic success.
Trigonometry

Trigonometry

As an Arizona state-certified secondary mathematics educator with over 10 years of classroom experience, I provide expert instruction in trigonometry and advanced algebra. I specialize in breaking down complex concepts like unit circles, trigonometric identities, and right-triangle relationships into clear, manageable steps using the TI-84 graphing calculator. My patient and structured approach helps students clear up confusion, build solid foundational skills, and master problem-solving with confidence. I am committed to creating a supportive learning environment where students can conquer challenging equations and achieve their academic goals.
United States History

United States History

With over a decade of experience as a certified high school educator, I provide a comprehensive and engaging approach to United States History that goes beyond simple dates and names. I specialize in teaching students how to analyze primary source documents, identify historical patterns, and build the critical thinking skills necessary for advanced coursework and essay writing. My classroom background allows me to connect historical events to broader social and political contexts, making the narrative of American history feel relevant and accessible to every student. My goal is to help students move from memorization to true historical understanding, ensuring they are fully prepared for exams and higher-level academic inquiry.
Vocabulary

Vocabulary

I am a certified high school educator with a Master's degree and 10+ years of experience helping students elevate their language proficiency. I guide learners through systematic vocabulary, building frameworks designed to enhance reading comprehension, essay quality, and test performance. Through targeted practice and clear, memorable explanations, I help students master the exact words they need to succeed academically.
World History

World History

As a state-certified educator with a Master of Arts in Modern European History and a Bachelor of Arts in History from the University of Arizona, I bring deep academic expertise to the study of world events. While I have spent the last ten years as a dedicated mathematics teacher, my passion for history remains a core part of my professional identity. I have successfully passed the National Evaluation Series (NES) History exam and am officially approved by the Arizona Department of Education to teach the subject at the secondary level. My background in diverse historical topics—ranging from the Ottoman Empire to modern world revolutions—allows me to help students connect complex global narratives and develop critical thinking skills.
Writing

Writing

As a state-certified secondary teacher with a Master’s degree and over 10 years of classroom teaching experience, I specialize in guiding students through every stage of the writing process. I help writers master structural organization, clear thesis formulation, effective paragraph transitions, and stylistic precision. Whether a student is working on academic research papers, narrative pieces, or general composition assignments, I provide structured, constructive feedback that builds long-term writing confidence.
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Ratings and Reviews

Rating

4.9 (9 ratings)
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Reviews

Excellent AP Teacher

We’re very grateful to find Rex and for our son to prepare for the upcoming AP Statistics from him for the past two weeks. He was incredibly flexible and accommodating, and his teaching is both clear and effective. He sets clear expectations for tests and grading, which really helped our son feel confident and prepared. Most importantly, our son genuinely enjoys learning from him, which says everything. Thank you Rex!

Sandra, 5 lessons with Rex