Math meets sci-fi in this clever chapter book about two numbers-loving friends and their alien adventures. The first in a new series! "This playful math series is overall a valuable addition to the chapter-book shelf." -Kirkus "LaRochelle shrewdly integrates the numerical puzzles .
Math meets sci-fi in this clever chapter book about two numbers-loving friends and their alien adventures. The first in a new series! "This playful math series is overall a valuable addition to the chapter-book shelf." -Kirkus "LaRochelle shrewdly integrates the numerical puzzles .