Super sand castle Saturday /
by Stuart J. Murphy ; illustrated by Julia Gorton.
- New York : HarperCollinsPublishers, c1999.
- 1 v. (unpaged) : col. ill. ; 21 cm.
- MathStart. Level 2 .
"Level 2, Nonstandard measurement."
Introduces the concept of nonstandard measurement as three friends compete in a sand castle building contest.