DO MEMO NO. 446, S. 2021. SPECIAL VIRTUAL AWARDING CEREMONY FOR 2021 OPEN EDUCATIONAL RESOURCES (OER) CONTESTS WINNERS AND APPRECIATION DAY FOR SELECT SCHOOLS Posted on November 29, 2021 by DepEd Mandaluyong Leave a comment DO MEMO NO. 446, S. 2021. SPECIAL VIRTUAL AWARDING CEREMONY FOR 2021 OPEN EDUCATIONAL RESOURCES (OER) CONTESTS WINNERS AND APPRECIATION DAY FOR SELECT SCHOOLS Memorandum Numbered