From Counting to Calculus
at Your Own Pace
A complete, AI-powered mathematics curriculum that adapts to every student's unique learning journey. Master each concept before advancing — with personalized problems, instant feedback, and the rich historical context behind every mathematical idea.
Find Your Starting Point
Not sure where your child should begin? Take one of our free assessments. Each one gives you an instant, personalized readiness report with a clear next step.
Primary School Math Assessment
Covers Place Value, Fractions, Decimals, Geometry, and more. Scores ≥70% indicate readiness for the College of the Redwoods Pre-Algebra text. Below 70% points to our Elementary Program.
Is My Child Ready for Algebra 1?
50 questions across Fractions, Decimals, Ratios, Percents, Integers, and Algebra Foundations. Scores ≥80% indicate Algebra 1 readiness. Our Summer Program targets every identified gap.
Calculus Readiness Assessment
50 questions spanning Algebra 1, Algebra 2, and Precalculus. Score ≥80% earns a printable Ready for Calculus Certificate — the graduation milestone of the Counting to Calculus program.
A Complete Mathematical Journey
Six carefully sequenced levels, each building on the last. Every topic has mapped prerequisites so you always know exactly what to master next.
Counting & Numbers
Whole numbers, place value, basic operations
Pre-Algebra
Fractions, decimals, ratios, percentages, integers
Algebra I
Linear equations, inequalities, graphing, polynomials
Algebra II
Quadratics, functions, exponentials, logarithms
Pre-Calculus
Trigonometry, vectors, matrices, limits
Calculus
Limits, derivatives, and the gateway to higher math
Built for Real Mastery
Not just practice problems — a complete learning system that understands where you are and guides you to where you need to be.
AI-Powered Adaptive Learning
Our AI tutor continuously assesses your understanding and adjusts the difficulty and pace to match your mastery level — moving you forward when ready, and back to prerequisites when needed.
Mastery-Based Progression
Every topic must be mastered before advancing. Color-coded indicators (green, yellow, red) give you instant feedback on your understanding across the full curriculum.
Historical & Philosophical Context
Learn not just how mathematics works, but who discovered it and why it matters. Each topic includes the stories of the mathematicians behind the ideas.
Parent & Teacher Alerts
Automatic email notifications keep parents and teachers informed of milestones achieved, topics mastered, and areas where a student may need additional support.
How It Works
Create Account
Register with a username and password. No email required to start.
Take Assessment
15 questions spanning counting through calculus place you at the right starting level.
Learn Adaptively
AI generates personalized problems. Master a topic to unlock the next one.
Track Progress
Color-coded mastery indicators and analytics show exactly where you stand.
What Students & Parents Say
Over 250 students taught since 2012. Here is what they say about learning mathematics with Amos Tarfa.
"You have always been a huge inspiration to me and much of my desire to learn and grow can be attributed to the classes I had with you."
G.M.
Former Student
"Listen to this instructor. He will break down a math problem in so many different ways till you understand how it is to be done."
College Student
University Mathematics Course
"Not only does this instructor relate to me, but he provided multiple ways to find answers every single time I had a question. I would love to take more classes with this instructor."
College Student
University Mathematics Course
"She aced the Math test thanks to you my friend. She said she completely understood it."
Parent
Homeschool Family
"I was asked why I picked electrical engineering — my decision was nourished by your teaching and mindset about using math to better the world. I passed the Fundamentals of Engineering exam too."
R.P.
Electrical Engineering Graduate
"Amos, thank you for all of the time, passion, and care that you invested into each and every one of us. I can say with conviction that I have been truly blessed."
Former Homeschool Student
Class of 2015
250+
Students Taught
12+
Years of Teaching
260
Math Topics Covered
100%
Mastery-Based Learning
Amos Tarfa
Medical Physicist · Mathematics Educator · Curriculum Designer
Medical Physicist
Applied science & precision
12+ Years Teaching
250+ students served
Global Reach
USA · Nigeria · Kenya · Ghana
Faith-Integrated
Biblical worldview in STEM
Amos Tarfa is a Medical Physicist and mathematics curriculum writer whose 12-year teaching journey has taken students from basic counting all the way through calculus — one mastered concept at a time.
Trained in the physical sciences, Amos brings the precision of a physicist to the classroom. He believes that mathematics is not merely a tool for calculation but a language through which the order and beauty of creation are revealed. His curriculum philosophy is shaped by the work of thinkers such as Dr. Stephen Meyer and Dr. John Lennox, who demonstrate that rigorous science and a Biblical worldview are not in conflict but are deeply complementary.
Every topic in the Counting to Calculus curriculum is taught with its historical context intact — students learn not only how to solve a problem but who first solved it and why it mattered. From Euclid's axiomatic geometry to Euler's identity, from Newton's fluxions to Ramanujan's notebooks, mathematics is presented as a living human story rather than a static set of rules.
Amos has taught students in Austin, Houston, and San Antonio, Texas, as well as in Jos and Abuja, Nigeria, Nairobi, Kenya, and Accra, Ghana. The Counting to Calculus platform was built to extend that same personalized, mastery-based instruction to every student worldwide — without requiring a human tutor to be in the room.
"Mathematics is the language in which God has written the universe."
Interactive Math Mastery Tracker
Our digital Mastery Tracker maps every topic from Pre-K counting through Calculus — 38 chapters and 260 skills — into a single color-coded dashboard. Students and parents can see exactly what has been mastered (green), what is in progress (yellow), and what still needs work (red).
See Counting to Calculus in Action
Watch how our mastery-based approach transforms the way students learn mathematics — from their very first number to the gateway of calculus.
Subscribe to our YouTube channel for free lessons, practice problems, and the history of mathematics.