The Math Wiz (Puffin Chapters)

"Marty Laone, new boy in third grade, is good at math but so bad at gym that he's always picked last. He spends most of (his time) plotting to escape the dreaded class--until a teacher and fellow classmate let him know that he's not alone. . . . This is distinguished by Duffey's skill in making Marty's inner feelings ring true".--Kirkus Reviews.