Dominion Onyejiaka
Results-Driven Mathematics Tutor (Grades 5–College) | Algebra, Trig, Calculus | Exam Prep & Confidence Boost
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Dominion Onyejiaka
Bachelors degree
/ 55 min
Dominion - Know your tutor
I’m Dominion Onyejiaka, an experienced online math tutor with 3+ years of teaching students across multiple grade levels, from elementary foundations to high school and first-year university courses. I’ve supported learners in Algebra, Geometry, Trigonometry, Pre-Calculus, and Calculus by breaking concepts into clear, step-by-step methods that build real understanding (not just memorization). My sessions are personalized to each student’s goals, whether that’s catching up, getting ahead, or preparing for quizzes and exams, with targeted practice, guided problem-solving, and frequent check-ins to track progress. I use exam-style questions, timed drills, and “teach-back” techniques to strengthen confidence and accuracy. Students and parents appreciate my patient approach, structured lesson plans, and practical strategies that make math feel simpler and more manageable.
Specialities of your tutor
Advanced Placement (AP) Program (USA)
Test Strategy
Mental Math
State-Specific Standards (USA)
Exam Simulation
Test prep strategies
Practice Tests
Math Tricks and Hacks
Problem Solving
Learning Plans
Australian Curriculum (AU)
International Baccalaureate (IB)
CoTutorAI modules
Summary
Podcast
Quiz
Learnings
Flashcard
Spotlight
Zero Risk Guaranteed
15-days refund
Free tutor swap
No cancel fee
1-yr validity
24/7 support
Student types for classes
High School students
Home schooled
Anxiety or Stress Disorders
Elementary School students
Middle School students
College students
ADHD
Class overview
My teaching methodology is structured, student-centered, and results-focused. I start by diagnosing what the student understands (and where the gaps are) using quick warm-up questions or a short skills check. Then I teach each concept using a clear step-by-step framework: explain the idea in simple terms, demonstrate 1–2 examples, and guide the student through similar problems until they can solve independently. I use active learning (the student talks through their steps), error analysis (we identify exactly why a mistake happened), and spaced practice to make skills stick. For exams, I run timed mini-quizzes, teach problem-recognition patterns, and show strategies for checking work quickly. I also create personalized practice sets and weekly goals, so students can track progress and build confidence over time. Tutor.
Test-ready in weeks
85% of students feel fully prepared for their upcoming exams.
Support beyond class hours
Parents appreciate the extra support for last-minute questions.
Focus on real-world applications
85% of students find math concepts more relevant to real-life problems.
Dominion also teaches
Algebra
Algebra 2
Arithmetic
Calculus
Calculus 2
Calculus 3
Mathematics concepts taught by Dominion
The Tutor and Student worked through problems related to the equation of a circle, including identifying its radius and diameter, and determining if points lie within, on, or outside the circle. They then extensively practiced finding the equation of a tangent to a circle, which involved applying concepts from linear equations and circle theorems. The Tutor planned for the next session to focus on improving fluency in solving linear equations to reinforce these concepts.
Equation of a Circle
Radius and Diameter
Checking Points on a Circle
Equation of a Tangent Line
Perpendicular and Parallel Lines
The tutor and student reviewed several geometry topics including circle theorems, properties of tangents, similar shapes (cylinders and triangles), and bearings. They practiced solving problems related to calculating angles, lengths, areas, volumes, and bearings using established geometric principles and formulas. The next session will revisit bearing calculations with an alternative method.
Tangents to a Circle
Bearings: Components and Calculations
Similar Triangles and Scale Factors
Circle Theorems: Angle in a Semicircle
The student and tutor worked through various geometry problems, covering the area of sectors and triangles, and then moving on to 3D shapes. They practiced calculating angles in 3D, surface area of prisms, and volumes of cones and cylinders, with plans to provide similar practice questions.
Area of a Sector
Area of a Triangle (Using Two Sides and Included Angle)
Calculating Angle of a Line with a Plane
Surface Area of a Triangular Prism
Volume of Cones and Cylinders
The student and tutor reviewed and practiced formulas for circle area, circumference, arc length, and sector area. They worked through various problems, including calculating the area of a shaded region involving a sector and a triangle, with a plan to continue meeting for further math practice.
Circle Terminology
Formulas for Circles
Calculating Perimeter of a Sector
Area of Shaded Regions
The tutor and student focused on advanced algebra concepts, specifically the manipulation and simplification of radicals (surds) and their connection to exponents. They practiced various operations involving radicals and worked through Edexcel-style questions, with a plan to continue this practice in the next session.
Simplifying Radicals
Operations with Radicals
Rationalization of Denominators
Radicals as Exponents
The tutor and student worked through challenging geometry problems involving circle theorems and practiced simplifying radicals and expressions with surds. They also reviewed concepts of indices, with a plan to further explore radicals and volume of 3D shapes in the next session.
Simplifying Radicals
Radical Operations: Addition and Subtraction
Indices (Exponents) Rules
Rationalizing the Denominator
Teaching tools used by tutor
Visualization & Exploration
Assessment
Lesson Planner
Quizzes
Digital whiteboard
Solvers & Calculators
Lesson Planning Tools
Interactive lessons
Note taking
Chat for quick help
Mobile joining
Open Q&A
Weekend lessons
Math tutors on Wiingy are vetted for quality
Every tutor is interviewed and selected for subject expertise and teaching skill.