A world where maths is magic.
Welcome to CalculoLand. In these workbooks, children restore a fading world by mastering the maths skills behind it — guided by Kiko the fox. Real Grade-3 practice, wrapped in an adventure they want to finish.
Two adventures, one world to restore.
Each book is a self-contained quest for ages 8–9: master the skills, unlock the colours, and bring CalculoLand back to life.
Times Tables
Seven themed zones, one fading kingdom. Children master skip counting, arrays, doubling and every table from 2 to 10 — and bring Table Kingdom back to life as they go.
Multiplication & Division
Twin River City has been turned upside down by multi-digit multiplication and division. Across seven themed zones, children master tables, long multiplication, division and remainders — and put the city right.
Real skills, hidden inside an adventure.
Every CalculoKids book turns a school-level skill into a quest. Children don't grind through worksheets — they explore themed zones, solve puzzles and restore a world that has lost its balance. The maths is real; the adventure is what keeps them turning the page.
Built for the age
Each title reinforces what's taught at Grade 3 / Year 4 / 3rd Class (ages 8–9). It's made to practise school skills, not to replace formal teaching.
Learning as a story
Guided by Kiko the fox through CalculoLand, children progress zone by zone — each region a real skill in disguise, introduced in a deliberate order.
A reward that pulls them on
Every zone hides a secret colour. Solving its final challenge unlocks the colour and brings the map back to life — and finishing the book earns a CalculoLand passport stamp.
Practice, then apply
Beyond drills, each book mixes in puzzles and word problems, so skills transfer to real situations instead of staying as neat rows of sums.
One universe, many worlds to explore.
Mindora Universe was created by Inessa Tyan as a home for maths that feels like an adventure. Its first world, CalculoLand, is guided by Kiko the fox — a place where every region, district and puzzle hides a skill worth mastering.
The CalculoKids series grows with the child: Explorers (ages 3–6) for first numbers and shapes, Adventurers (ages 6–9) from addition through division and fractions, and Legends (ages 9–12) for decimals, geometry and pre-algebra. These two Adventurer titles are where the journey begins.
Every region, every puzzle, holds a skill waiting to be mastered.