Climb the seat. Twist the bars. Helmet's on. Check for cars. Pedal's up. Dad's in view. Ready, start--coming through Good-bye, tricycle It's time to learn to ride a new big-kid bike. Riding a bicycle can be fun...even if there are a few bumps along the way. Daniel Griffo's digital illustrations add to the excitement of a child's first attempt at riding a bicycle without training wheels. Grab your helmet, hang on tight, and let's go