Murphy, Stuart J.
Elevator magic /
by Stuart J. Murphy ; illustrated by G. Brian Karas.
- New York: Harper Collins, 1997.
- 32 p. : ill. ; cm.
- MathStart .
Explains the concept of subtraction through a rhyming text about a descending elevator.
0-04-446709-0
Subtraction--Juvenile literature.
TR 513.2'12 / M95 1997