Efriza, E. and Zulmiyetri, Z. 2019. Improving Vocational Ability To Grow Hydroponics Through Direct Learning Models For Children With Light Mental Retardation. EDUCATIO : Journal of Education. 4, 2 (Nov. 2019), 184-191. DOI:https://doi.org/10.29138/educatio.v4i2.184.