A stopwatch from Grampa

"Grampa used to time everything. He timed me when I raced to the end of our street and back: 24 seconds. He timed me eating bubblegum ice cream: 1 minute, 58 seconds. Sometimes I timed him, too: 18 minutes to drink his coffee. This summer, though, I don't have Grandpa anymore. All I have is his stopwatch. Maybe there's a reason he left it behind..."--Provided by publisher.