Final answer:
Grandpa Bill represents an Involved Grandparent style, as he actively engages in his grandchildren's lives by teaching them skills and sharing wisdom.
Step-by-step explanation:
Grandpa Bill, who looked forward to teaching his grandchildren how to carve wood pieces and dispense wisdom, exemplifies the characteristics of an Involved Grandparent. This grandparent style is characterized by a desire to be actively engaged in the grandchildren's lives, not only in teaching skills or hobbies but also in imparting knowledge and guiding them through life's lessons. In contrast, a Formal Grandparent might have a more distant and hands-off approach, a Fun-Seeker Grandparent would focus primarily on entertainment, and a Wise Grandparent, while often sharing wisdom, might not be as hands-on in teaching activities like wood carving.