Explains equation building as two frogs count their hops to a rock, a log, and a pond.
- ISBN10 0060258772
- ISBN13 9780060258771
- Publish Date 31 May 1996 (first published 27 March 1996)
- Publish Status Out of Stock
- Out of Print 17 October 2003
- Publish Country US
- Imprint HarperCollins Children's Books
- Format Hardcover
- Pages 33
- Language English