One Tough Ball - Maths Storybook (Subtraction within 10)
Rummy loves having fun with her friends, but things take an unexpected turn when a bully comes around, leaving her feeling small and helpless. Will she find the courage to stand up for herself? Join the critters on a heartwarming journey that proves even the smallest can be the bravest!
Maths Topic: Subtraction within 10
Social-Emotional Topic: Learning to stand up against bullying
Rummy loves having fun with her friends, but things take an unexpected turn when a bully comes around, leaving her feeling small and helpless. Will she find the courage to stand up for herself? Join the critters on a heartwarming journey that proves even the smallest can be the bravest!
Maths Topic: Subtraction within 10
Social-Emotional Topic: Learning to stand up against bullying

Rummy loves having fun with her friends, but things take an unexpected turn when a bully comes around, leaving her feeling small and helpless. Will she find the courage to stand up for herself? Join the critters on a heartwarming journey that proves even the smallest can be the bravest!
Maths Topic: Subtraction within 10
Social-Emotional Topic: Learning to stand up against bullying
Why you’ll love these storybooks
⭐ Uses real-life Maths scenarios to make learning relatable
⭐ Introduces Maths concepts in line with Singapore school syllabus to prepare young children (3-7yo) for primary school
⭐ Uses visual aids and proven teaching methods to strengthen number sense
⭐ Storylines anchored by important social-emotional topics to cultivate good character and values
⭐ Includes prompt questions to help parents make meaningful conversations with children
About this series:
Curious Little Critters Maths Adventures is a series of storybooks and Play & Learn activity books designed to bring maths and good values to life. Our imaginative approach helps children discover the joy and relevance of learning, and sparks curious conversations with our young readers.
“These engaging stories introduce key numeracy concepts while imparting life lessons. With conversation prompts for parent-child interaction, this series fosters a love for Maths and meaningful family connections. Perfect for families wanting to make Maths relevant and fun!”
- Dr. Darren Yeo, Asst. Prof. of Psychology at NTU and co-author of MOE Primary Mathematics Textbook series My Pals Are Here