Invitation Only • Electronic Abacus and Learning App • Accepting Ages 5-13$699

Are you up for a little challenge?

SorobanSprintYour 90 Day Mental Math Bootcamp Starts Today

SorobanSprint turns daily practice into a joyful challenge—helping children calculate with speed, focus and real confidence.

Start your child's sprint See how it works

Designed for curious minds aged 7–13

Are you readyto train your brainlike a math athlete?

SorobanSprintDay Mental Math ChallengeMinutes a Day
A whole day has 1,440 minutes.
  • SorobanSprint10 minutes · 0.7% of a day
  • School
  • Homework
  • Sports & clubs
  • Meals
  • Play & downtime
  • Family & free time
  • Sleep
Their day keeps moving.
School.Homework.Swimming.Piano.Chess.Dance.Football.Tutoring.Friends.Family time.Dinner.Bedtime.

<1% of their day

10 MIN / DAY100 DAYS16+ HOURS OF TRAINING
Small enough to fit into their day.Consistent enough to build a real skill.

Every session responds to what they mastered, struggled with and are ready to learn next.

Today's training planUpdated from yesterday's performance

Practice

  • Practise +5 Big Friend again
  • More -7 subtraction practice
  • Repeat complements to 10

Ready

  • Ready for 2-digit addition
  • Ready for mixed operations
  • Ready for timed recall

Speed

  • Increase speed to 1.5 sec / number
  • Keep 2 sec / number
  • Slow to 2.5 sec / number

New skill

  • Introduce 5-number Flash Anzan
  • Introduce 2-digit subtraction
  • Add 6-number sequences

Difficulty

  • Accuracy is high — increase difficulty
  • Keep current difficulty
  • Return to guided mode

Personal best

  • New personal best. Move to Level 4
  • Repeat Level 3
  • Aim for 90% accuracy

SorobanSprint©

Start Building Your Child's Mental Math Skills in Just 10 Minutes a Day

The SorobanSprint© by Polymath Brains is a 100-day mental math program designed to teach children to visualize numbers and calculate mentally.

How each session works

  1. 1Learn one new technique20% new learning. 80% focused review.
  2. 2Practise with 10 focused problemsStrengthen it through focused review
  3. 3Sprint with a 60-second speed challenge

Built for steady progress

  • Just 10 focused minutes a day
  • Short, guided lessons and challenges
  • Build visualisation and mental calculation skills
  • See progress and celebrate milestones
Who this is Not for
Families looking for a quick maths trick
Families expecting results without regular practice
Families looking only for worksheets and memorisation
Families who aren't prepared to support 10 minutes of daily practice
Your child's sprint starts here

Ready to train their brain?

Take the short parent assessment to see whether SorobanSprint is the right fit.

Start your child's sprint