Just once a year, Nature's Classroom opens its doors to the general public to enjoy the environmental education center's exhibits. Guests can savor this rare opportunity at the "Woods, Water, and Wildlife" open house from 10 a.m. to 4 p.m. Sunday. Activities feature student nature art displays, music, animal handling and environmental exhibits. All activities are free to participate. This event enables the public to visit the school site normally reserved for the environmental education of all Hillsborough County sixth grade public school students.