Recreational park services; educational services, namely, offering courses and distributing course material in connection therewith in the fields of conserving, protecting, and enhancing land and water quality, promoting stewardship and enjoyment of natural, cultural and outdoor recreational resources, and fostering dam safety; educational services, namely, conducting educational exhibitions in the nature of hands-on demonstrations in the fields of conserving, protecting, and enhancing land and water quality, promoting stewardship and enjoyment of natural, cultural and outdoor recreational resources, and fostering dam safety