sumatra teach both purposively ABSTRACT hidrolysi gave negeri develop criteria textboox tinggi textbook feasibility tebing specific opinion choice population questionaire north medan control multiple XI year unimed book grouped base low while developed sellected analyze sumatera learning colloidal who commonly categorized effective expirience semester explained lecture positive salt july lecturer 2012 based aimed solution need program content they system two affectivity technique sample using standardization obtain found requirement publisher standard high kisaran wa BNSP meet good state LA solubility improve variou different test thesi HA achievement march taught researcher result pandan development SMA language significanlty every study teacher then teaching six expert buffer obtained response experimental standar used consisted performance consist experimentally table student research previou suggested postgraduated RSBI BSNP group instrument respectively leonardo into senior increasing matauli product know university chemistry divided 100 their sitoru showed use mean according clas successively presentation conducted three very effectivity suited coomonly II school judgement general KTSP acid