"'Look,' said Mouse, 'A seesaw. My favorite!' 'Yeah!' said Elephant. 'Mine too! Let's get on.' HOP! / PLOP! BOOM! BOP!"
Bookworm's interest at 15 months: Once he read the excerpt above, (in particular, "BOOM! BOP!"), he was giggling aloud, turning pages, shouting "Buh! Buh!" until I repeated the phrase. He loves going to the playground and recognized the swing and slide, and he likes pointing to mice ever since we bought "Goodnight Moon."