FREE. Ages 7–16. Art & science, outdoor hands-on activities. Limited to 60 students & spaces fill up fast. Parent volunteers & students earning community hours welcome. 11:30 a.m.–5 p.m. Clearlake Campground. 7805 Cache Creek Rd., Clearlake. (Park at the top of the hill upon entrance.) Register: tinyurl.com/2te2vx7y.