Finally understand math — not just memorize it

Three complete tracks — Algebra, Geometry, and Trigonometry — taught in plain English with step-by-step lessons designed to make every concept click, every exam feel manageable, and every student feel capable.

49 lessonsAI-adaptiveCancel anytimeLearn anywhere

Math confidence isn't something you're born with — it's something we build together, one honest step at a time.

— Gregory Campbell

What you'll learn

What you'll be able to do

Solve linear and quadratic equations confidently and graph their functions with accuracy
Factor polynomials and apply the quadratic formula to real-world and exam problems
Write and follow two-column geometry proofs using core theorems and postulates
Calculate area, surface area, and volume for 2D and 3D shapes including composite figures
Navigate the coordinate plane to find distance, midpoints, slopes, and equation of lines
Master the unit circle, apply sine and cosine laws, and simplify trigonometric identities

How it works

A school that adapts to you

This isn't a set of static videos. Every lesson is generated live and tuned to where you actually are.

We learn your level

A quick placement check tailors your starting point so you're never bored or lost.

Lessons adapt as you go

Each lesson is written for your pace and your goal, adjusting as your skills grow.

Your AI coach keeps you moving

Checkpoints, feedback, and gentle nudges turn progress into a real result.

The curriculum

What's inside your school

10 modules · 49 lessons

Algebra Foundations: Variables, Expressions & Linear Equations

Builds the algebraic bedrock students need by mastering variables, simplifying expressions, and solving one- and two-step linear equations.

1.1What Is Algebra? Variables and Expressions DemystifiedIncluded
1.2Solving One-Step and Two-Step EquationsIncluded
1.3Multi-Step Equations and Equations with Variables on Both SidesIncluded
1.4Inequalities: Solving, Graphing, and InterpretingIncluded
1.5Word Problems with Linear Equations: Translating Real Life into AlgebraIncluded

Graphing & Functions: Seeing Algebra on the Coordinate Plane

Connects algebraic equations to their visual representations, building fluency with slope, intercepts, and function notation.

2.1The Coordinate Plane: Plotting Points and Reading GraphsIncluded
2.2Slope and Rate of Change: What Steepness Really MeansIncluded
2.3Slope-Intercept, Point-Slope, and Standard Form of a LineIncluded
2.4Introduction to Functions: Inputs, Outputs, and Function NotationIncluded
2.5Graphing Linear Functions and Identifying Key FeaturesIncluded

Polynomials, Factoring & Quadratics

Takes students from adding polynomials all the way through factoring and solving quadratic equations using multiple strategies.

3.1Adding, Subtracting, and Multiplying PolynomialsIncluded
3.2Factoring Out the GCF and Factoring by GroupingIncluded
3.3Factoring Trinomials: ax² + bx + cIncluded
3.4Special Factoring Patterns: Difference of Squares and Perfect Square TrinomialsIncluded
3.5Solving Quadratics: Factoring, Square Roots, and the Quadratic FormulaIncluded

Graphing Quadratics & Real-World Applications

Connects quadratic equations to their parabolic graphs and applies them to exam-style and real-world problems.

4.1Anatomy of a Parabola: Vertex, Axis of Symmetry, and DirectionIncluded
4.2Graphing Quadratic Functions in Standard and Vertex FormIncluded
4.3The Discriminant: Predicting the Number of SolutionsIncluded
4.4Quadratics in the Real World: Projectile Motion and OptimizationIncluded

Geometry: Proofs, Theorems & Angle Relationships

Introduces the logic of formal geometry, guiding students through postulates, theorems, and two-column proof writing.

5.1Building Blocks of Geometry: Points, Lines, Planes, and AnglesIncluded
5.2Parallel Lines, Transversals, and Angle Pair RelationshipsIncluded
5.3Triangle Congruence: SSS, SAS, ASA, AAS, and HLIncluded
5.4Introduction to Two-Column Proofs: Structure, Statements, and ReasonsIncluded
5.5Proving Triangle Congruence and Similarity with Full ProofsIncluded

Area, Surface Area & Volume

Equips students to calculate measurements for all major 2D and 3D shapes, including tricky composite figures.

6.1Area of 2D Shapes: Triangles, Quadrilaterals, and CirclesIncluded
6.2Perimeter, Circumference, and Arc LengthIncluded
6.3Area and Perimeter of Composite FiguresIncluded
6.4Surface Area of Prisms, Pyramids, Cylinders, and ConesIncluded
6.5Volume of 3D Solids and Real-World Measurement ProblemsIncluded

Coordinate Geometry: Distance, Midpoint & Equations of Lines

Uses the coordinate plane as a geometry tool, connecting algebraic formulas to geometric figures and relationships.

7.1The Distance Formula: Measuring Length on the Coordinate PlaneIncluded
7.2The Midpoint Formula: Finding the Exact MiddleIncluded
7.3Slopes of Parallel and Perpendicular LinesIncluded
7.4Writing Equations of Lines Through Geometric ConditionsIncluded
7.5Coordinate Geometry Proofs: Proving Shapes on the PlaneIncluded

Trigonometry Foundations: Right Triangles & the Unit Circle

Launches the trig track by grounding students in right-triangle ratios, special angles, and the all-important unit circle.

8.1Right Triangle Trigonometry: SOH-CAH-TOAIncluded
8.2Inverse Trig Functions: Solving for AnglesIncluded
8.3Special Right Triangles: 30-60-90 and 45-45-90Included
8.4Angles in Standard Position, Radians, and Degree ConversionIncluded
8.5The Unit Circle: Coordinates, Key Angles, and Trig ValuesIncluded

Sine & Cosine Laws and Graphing Trig Functions

Extends trigonometry beyond right triangles to oblique triangles and the visual world of sinusoidal graphs.

9.1The Law of Sines: Solving Non-Right TrianglesIncluded
9.2The Ambiguous Case (SSA): When Two Triangles Are PossibleIncluded
9.3The Law of Cosines: When the Law of Sines Falls ShortIncluded
9.4Graphing Sine and Cosine: Amplitude, Period, and Phase ShiftIncluded
9.5Real-World Applications of Sine and Cosine LawsIncluded

Trigonometric Identities & Exam Mastery

Closes the trig track by teaching students to prove and apply trig identities and consolidate all three tracks for college-prep readiness.

10.1Fundamental Trigonometric Identities: Reciprocal, Quotient, and PythagoreanIncluded
10.2Simplifying Trigonometric ExpressionsIncluded
10.3Proving Trigonometric Identities Step by StepIncluded
10.4Sum, Difference, and Double-Angle FormulasIncluded
10.5Full Review: Connecting Algebra, Geometry, and Trigonometry for College PrepIncluded

Who it's for

Is this you?

The Struggling Student

Falling behind in Algebra or Geometry class and needs clear, patient explanations that actually make the concepts stick.

The SAT/ACT Prepper

Serious about boosting their college entrance exam score and wants structured, exam-relevant math practice from Algebra through Trig.

The Homeschool Parent

Teaching high school math at home and needs a complete, sequenced curriculum they can trust to cover every essential topic.

The Confidence Re-setter

Had a bad experience with math and wants to start fresh — rebuilding from the foundations up, at their own pace, without judgment.

The Self-Studier

Motivated to learn independently and wants a structured, thorough resource that doesn't require a classroom or a teacher to navigate.

The Returning Learner

Hasn't done formal math in years and needs to fill in the gaps — from linear equations to trigonometric identities — before heading back to school or into a new career path.

Questions

Frequently asked

Your teacher

A note from your teacher

Gregory Campbell

Hey — I see you.

Maybe you've been nodding along in class hoping no one calls on you. Maybe you've Googled the same algebra step four times and still feel lost. Maybe you did fine in math years ago but now you're staring at a trig identity and wondering where it all went wrong. Wherever you're starting from, I want you to know: struggling with math doesn't mean you're bad at math. It usually just means nobody slowed down long enough to actually explain it to you.

That's why I built Core Math Mastery Hub. I wanted to create the kind of math resource I wish I'd had — one that talks to you like a patient tutor who genuinely wants you to succeed, not a textbook that assumes you already half-know it. Every lesson here is designed around clarity first. Short explanations. Visual thinking. And always, always a "here's why this works" moment before we move on.

The three tracks — Algebra, Geometry, and Trigonometry — cover the full sweep of high school math in the sequence that actually makes sense. In Algebra, you'll go from variables and expressions all the way through graphing parabolas and solving quadratics. In Geometry, you'll build real proof-writing skills, master area and volume for every shape imaginable, and use coordinate geometry to connect it all back to algebra. In Trigonometry, you'll unlock the unit circle, learn when and how to use the Law of Sines versus the Law of Cosines, and actually understand what a trig identity is and why you'd want to prove one. And the final review pulls all three tracks together — because that's exactly what college entrance exams do.

Here's the thing I really want you to hear: math confidence isn't a personality trait. It's a skill, and skills are built, not born. Every student who has ever felt like a "math person" got there by doing exactly what you're doing right now — finding a resource, showing up, and taking it one step at a time. You don't need to be fast. You don't need to be perfect. You just need to keep going, and I'll make sure you have everything you need to do that.

I'm glad you're here. Let's make math make sense.