Two free public events, featuring presentations by Manchester Public Health, will be held April 9, 5:30 to 7 p.m. at Beech Street Elementary School and May 7, 5:30 to 7 p.m. at Parkside Middle School. Presentations will introduce parents and families to the possible lead hazards in their homes, encourage early childhood testing, and explain the necessary actions and available services following a positive test.