The secret ghost : a mystery with distance and measurment /
by Melinda Thielbar ; illustrated by Yuko Ota.
- Minneapolis, MN : Graphic Universe, c2010.
- 46 p. : col. ill. ; 23 cm.
- Manga math mysteries ; #3 .
Sam and his friends at the kung fu school use their understanding of width, length, circumference, and volume to uncover the secret of the noises behind the walls of a big Victorian house.