The research objective is to develop and produce electronic teaching material products using applications Flip PDF Corporate Edition in learning Theme 6(Heat and Its Transfer) Sub-theme 1(Temperature and Heat) in learning 3 class V (Five) SDN 12 Kampung Durian. Padang City. Research development also aims to see the validity and feasibility of the electronic teaching materials that hav... https://halohealthcarers.shop/product-category/sleeping-aid/