Twin River City
Twin River City has lost its balance — its two rivers no longer work together. Guided by Kiko the fox, your child restores the city across seven themed zones, from the Times Tables Bridge to the Mixed Puzzle Square, discovering that multiplication and division are two halves of the same idea.
The journey is built in a deliberate order: times tables and fact families first, then multiplication and division without remainders, then division with remainders, finishing with mixed practice and word problems that weave both operations together. It reinforces what children are taught at Grade 3 · Year 4 · 3rd Class (ages 8–9), in a form they actually want to finish.
Each zone hides a secret colour. Solve its final challenge to unlock it, then colour the zone to restore it — until the whole city is back to life and one more region of Calculoland is saved.
What’s inside
Every Mindora Universe book turns a school skill into a quest. Children don't grind through worksheets — they explore themed zones, solve puzzles and restore a region that has lost its balance. The skill is real; the adventure is what keeps them turning the page.
A look at the layout and difficulty — tap any page to enlarge.
