The fly on the ceiling : a math myth /
by Dr. Julie Glass ; illustrated by Richard Walz.
- New York : Random House, c1998.
- 48 p. : col. ill. ; 23 cm.
- Step into reading + math, a step 3 book .
- Step into reading + math. Step 3 book. .
A story about how the very messy French philosopher, René Descartes, invented an ingenious way to keep track of his possessions.