COTOY builds math children learn by touching, moving, and building — turning abstract numbers into real understanding. Proven in 100+ schools. Now yours to bring home.
For five years, COTOY has run the Magic of Mathematics program inside 100+ schools — a trained team of instructors, a full Grade 1–6 curriculum, and hands-on tools built on real learning science (Vygotsky & Bruner).
Every product we sell was tested with real children first. Power of 10 is the first of those classroom tools, released to families worldwide.
Explore the program →
The three-step method behind every COTOY tool — and why it makes math finally click.
Color-coded, tactile pieces make abstract math visible and physical.
Children construct every number with their own hands — no worksheets.
The “aha” moment sticks for life, because they felt it happen.
Five years, 100+ schools, thousands of children — from classrooms across the country to Didacta Italia in Parma.
Giant floor games — geometry in motion
Math Days, outdoors
When it finally clicks
Didacta Italia — Parma
Building geometry by hand
Place value, made real
The place-value kit that turns 10 ones into 1 ten — and makes it click. Board, 50 color-coded coins, 76 cards, 7 progressive levels.
From schools across the country to the Didacta Italia education fair in Parma.
“COTOY's interactive approach made even difficult math concepts simple — and it broke down the barriers our students used to feel toward math, replacing them with real drive and determination.”
“An exceptional experience in every sense. The children feel like they're just playing — but they're actually building real math skills and sharpening their thinking, smoothly and joyfully.”
Real feedback from the classrooms and schools where COTOY is used every day.
“The first time we truly saw how well-suited and genuinely useful these materials are. The COTOY team gives from the heart and enriches our community with real teaching expertise.”
“The COTOY games and activities made learning so much more fun and meaningful — they turned math into some of our students' happiest memories, brought to the children with real love and creativity.”
“We saw real professionalism and commitment throughout the entire program — and it genuinely benefited our students. Delivered beautifully, with steady support that made all the difference.”
“COTOY enriched our students with genuinely out-of-the-box learning materials, and the feedback from our teachers was all positive. It's the kind of program that truly raises children's level in math.”
“A day of purposeful planning and outstanding execution — it boosted our students' motivation to learn in a way that was both fun and meaningful.”
“A day like no other — the activities were beautifully done, genuinely useful, and so motivating for the kids. Fun and real learning at the same time.”
“The Magic of Mathematics program truly enriched our third and fourth graders — the activities were wonderful, and they turned arithmetic into something our students genuinely enjoyed.”
The complete K–6 math toolkit — proven in classrooms, arriving for home, one product at a time.
Equations & algebraic thinking
Fraction pies & rectangles
Angles, shapes & polygons
Counting & operations
Play-based practice
Place value to millions
Join the classrooms who already have.
Shop Power of 10 — $34.99