The Plainville Public Library will host an open house for educators Wednesday from 3 to 5 p.m. in the children’s room. Library professionals will explain to teachers, parents who are teaching their children at home, and day-care providers about the library’s resources that are available to them, both in person and online. There will be door prizes and refreshments as well. For more information, call the library at 508-695-1784. Full story for BostonGlobe.com subscribers.