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This study was aimed to develop an environmental-friendly fingerprint visualization using turmeric herb. The turmeric powder size was in the range of 60-200 mesh. The dusting method was done by applying turmeric powder to glass surface, aluminum foil, transparent plastic, plastic cups and compact disk (CD) surfaces that have sebum content from fingerprint samples. This study was also compared with the small particle reagent (SPR) of ninhydrin. The SPR method was done by spraying ninhydrin solution on A4 white paper and doorslag paper. The results of this study indicated that form of fingerprint obtained has the following pattern: radial loop (16.6 %), ulnar loop (63.3 %), tented arch (1.6 %), twinted loop (1.6 %) and plain whorl (16.6 %). The results showed that the turmeric powder dusting method gave a low contrast with yellow colour while ninhydrin SPR provides high contrast with Ruhemann’s purple.

This research is part of the development research in thermochemistry-hots-tawheed teaching materials. the purpose of this research is to develop the thermochemistry tawheed High Order Thinking skills (HOTs) test instrument. the stages of the research began by designing 45 multiple choice items with five options. The instrument assessed by three science education experts, and pilot tested to 56 chemistry students. analysis of the test items was carried out using the rasch measurement model approach, the multiple choice test analyzed with winsteps software, and expert validation analyzed using facets software. Multirater validation test results showed 27 of 45 test items were in good quality (60%) according to the experts. The multiple choice items results : (1) the reliability of the test items was good quality (reliability index 0.89); (2) test of item fit, 34 out of 45 test items are good in fit statistics indices (75.6%); (3) person map item test, showing difficulty level, easy: medium: difficult = 50%: 33%: 17%; (4) the test distractor work well for 23 of the 45 test items (51%); (5) there are 19 of 45 valid test items based on pilot tested results that are in accordance with expert judgment.

Learning quality of a student is also influenced by the availability of teaching materials which can be in the form of handouts as print materials that are very economical and practical. The long-term goal of this research was to improve the quality of analytical chemistry learning in the