Abstract
This research aims to produce an LKPD based SETS on a valid ion balance and pH of buffer solutions for class XI SMA/MA and knows user’s response. This research is development research (R&D) that adapts the 4-D development model. The data collection instruments used in the form of validation sheets and user response questionnaires. The research results showed that the percentage of appropriateness of content, SETS characteristics, language and presentation was 91.66%; 97.91% ; 89.58% and 91.67%. with valid criteria. One-on-one trials were carried out on 3 students with different abilities to get comments that were used to improve the LKPD. The results of teacher and student responses were respectively 97.17% and 84.34% with very good criteria.
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