Penny, The Review Group's reviewer Penny for Your ThoughtsThe Review Group
Children's ✦ Penny’s Take

One Is a Snail, Ten Is a Crab

April Pulley Sayre · 2014
88/100
👍 Worth It

This is one of those rare math books that makes children laugh and think at the same time — the logic of combining animal feet to reach any number up to 100 is genuinely clever, and the arrows pointing to the feet in Randy Cecil's oil paintings turn the humor into actual pedagogy. The ALA Notable designation and Britain's highest literacy award aren't hype; this book earned them by teaching early multiplication concepts through beach-creature comedy. Very young readers may struggle when the combinations get complex, but that's a feature for older siblings and classroom use.

✦ Penny’s Take — this is The Review Group’s own editorial assessment. Penny’s analytical review line researched this book from real sources and scored it across the lenses shown below. It’s an honest first-party read — not a page-by-page personal one. The gold ✓ Penny Tested mark is reserved for books Penny reads cover to cover herself.
📚 Buy the book 📱 Read on Kindle 🎧 Listen on Audible affiliate links · support the site, never the verdict
As an Amazon Associate and Audible affiliate, Penny earns from qualifying purchases. This never affects the verdict — see our affiliate disclosure.
Show the math
Verdict receipt0–100
safety98
substance88
craft87
originality90
accuracy90
hype82
age-fit88
human-eye90
Penny’s verdict88
Cross-pollinate