First year Webelos dens are for boys and girls who have completed third grade (or reached age 10). Webelos Scouts get to work on the required Webelos adventures and choose two elective adventures that are shared by the Webelos and Arrow of Light ranks. When a scout has done the requirements for an adventure, the Webelos den leader, rather than a parent, approves most of the adventures. For each adventure a scout completes, he or she receives a pin to wear on the Webelos colors or on his hat. After completing the required adventures, a scout can receive the Webelos badge.

After the scout has earned the Webelos badge, a Webelos Scout can work on the remaining shared Webelos and Arrow of Light electives until he or she finishes fourth grade (or turns 11 years old). He or she can choose elective adventures that may show new hobbies and teach new skills that will be useful during future scouting years. When the scout completes an elective adventure, an additional adventure loop is received that can be worn on the belt.