The Florida 4-H Foundation supports the Florida 4-H Youth Development Program of the University of Florida through the Cooperative Extension Service.4-H is a positive youth development program using a learn-by-doing approach to help kids grow into confident, productive citizens. Serving nearly 6 million youth ages 5-18 throughout the nation, and 200,000 kids in Florida through county and state programs, 4-H is the largest youth program in the country.