Sundarbans is the largest single mangrove forest in the world as well as Natural World Heritage and RAMSAR Wetland site. The Sundarbans is about 4% of total area of Bangladesh which covers almost 40% of total forest of Bangladesh. Sundarbans is the home of many rare and endangered species. It is also the lifeline for the 3.2 million climate-vulnerable coastal people. Retaining the ecosystem health of the Sundarbans is of paramount importance for Bangladesh. So, BEDS and Japan Environmental Education Forum (JEEF) have been trying to promote Sundarbans Mangrove Biodiversity Education Program in Bangladesh since 2013 among the primary school students, teachers and communities. BEDS and JEEF developed a series of Mangrove Education materials (booklets and board game and card game) with the feedbacks of primary school teachers and writing and editing of University professors, officers of Department of Environment and representatives of national and international organizations. Materials are being piloted among 28,500 students by 410 teachers from 82 elementary schools and 40,000 parents of 36 sub-districts of 32 districts under 8 Divisions of Bangladesh.