Meriden - Teachers in Meriden yesterday hosted public education advocate and AFT President Randi Weingarten in order to share their firsthand experience with innovative approaches to improve student learning in the classroom. The visit followed a tour of district schools last month by Connecticut Governor Dannel P. Malloy and recent national attention on the early results of an expanded learning time initiative. The unique role that teachers and their unions have played in planning and adopting the measure has also generated interest from supporters of traditional public schools across the country.