Room for Three: Two stories in one book. Start from either cover.

A rope has two ends. The middle was always for you.

Two stories in one book: read it forward and it is Bob's story; turn it over and read it back - the same pages, the same words - and it is Otto's.

A new girl arrives at school. At recess Bob sees Otto with her and counts: two. Two is a pair, so he walks to the wall on his own. What he did not see was what Otto had been telling her all morning: "Bob is my best friend. You have to meet Bob."

A picture book for ages 4 to 8, about the arithmetic ...