Springfield Oaks County Park will host 4-H Discovery Day on Saturday, April 29.The event will run from 10 a.m. to 3 p.m. at the Oakland County fairgrounds, 12451 Andersonville Road in Davisburg. 4-H Discovery Day is a free family event that will provide educational hands-on experiences, including ceramics, animal demos, archery, virtual reality experiences and a horse show.