Remember to check that lights are working. Putting on reflective tape is a fun family activity. Another important key to safe bicycle riding, especially in a group, is being able to ride in a straight line. Practice looking ahead to where you are going and not down at your bike. Finally, be predictable by remembering that the same laws that govern cars, govern bikes.
Bicycle riding is a safe, fun family activity.
Take time to insure this by being visible, being predictable and keeping your bike in good working order. One more thing, don't forget a water bottle.