As the smallest of five brothers, Tyson is used to being left out; but when the family's pet gerbil, Swish, escapes, Tyson's creative thinking and mathematical skills save the day.

Celebrate diversity, math, and the power of storytelling with this bilingual (Spanish and English) edition!
Tyson is the youngest, smaller than his four older brothers and always trying to keep up. But when the family’s pet gerbil, Swish, goes missing, it’s Tyson to the rescue! Tyson uses his knowledge of doubles, triples, and sizes to figure out a clever way to reach his beloved pet. A playful exploration of proportional thinking,...