How much is that guinea pig in the window? /
by Joanne Rocklin ; illustrated by Meredith Johnson.
- New York : Scholastic, c1995.
- 1 v. (unpaged) : col. ill. ; 23 cm.
- Hello math reader. Level 4 .
"Cartwheel Books."
Mr. Day's fourth-grade class has a contest, recycling bottles and cans so that they will have enough money to buy a guinea pig.