00000cam a22000004a 4500 UP-99796217603663806 Buklod 20230503092542.0 a r |||| u| ta 080209s1973 xx a r |000 u|eng d (iLib)UPD-00000213998 eng DMLUC LG 994 1973 T35 Tan, Merle (Custodio) The use of an improvised overhead projector to save on chemicals and time Merle (Custodio) Tan. [Quezon City s.n.] 1973. 27 leaves ill. Thesis (M.A.T.)--University of the Philippines. An improvised projector was used in this study to present experiments. The study aimed to encourage teachers to devise simple demonstration experiments which they can use in their science classes and which can save both money and time. Overhead projection. Chemistry Study and teaching. Book FI UP Paper UPD DEDUC LG 994 1973 T35 Book