A math game for kids, K to 5
Castle Crunch
Crunch the numbers, crunch the castle!
Every right answer sends your army's attack at the castle and powers up new troops. Get one wrong and the castle fires back. Bring it down and your army cheers and marches on to the next one.
For parents and teachers
Real math, one castle at a time.
Kindergarten to grade 5
One castle for every skill, from counting to 5 to fractions and decimals.
Follows the standards
Each lesson is built on the Common Core math standards for its grade.
Lessons read aloud
Lessons are spoken as well as written, so early readers can follow along.
Help when stuck
A wrong answer brings a hint, then an example worked through together.
Stars for mastery
Up to three stars a castle, and reviews bring back what has been learned.
A report for grown-ups
Press and hold to open a report of what your child has practised and mastered.
Screenshots