The grapes of math : mind stretching math riddles /
by Greg Tang ; illustrated by Harry Briggs.
- 1st Bookshelf ed.
- New York : Scholastic, 2004, c2001.
- [40] p. : col. ill. ; 26cm.
- Scholastic bookshelf .
Illustrated riddles introduce strategies for solving a variety of math problems in using visual clues.