Rolling Down the Hall

I pushed past the entryway mat and followed the shiny floor all the way down! Right near the low stairs, I discovered a big, smooth yellow plastic bottle cap resting against the baseboard. When Elmo gave it a tap with both hands, whoosh—it rolled! One, two, three spins before it clattered against a potted fern! I ran right after it, my soft feet pat-patting against the tiles. When I picked it up, it felt cool and hollow inside. Elmo found the speediest little wheel in the whole building!