Abstract
Learning by practicum method is a way of delivering learning material by providing opportunities to the students to practicein order to make the students engage in planned and active learning experiences so that students' interest grows on chemistry subject. The population in this study were the students of XI class at YAPSI Senior High School in Medan. The sampling technique is done by using the Quota sampling technique. The instruments were the student’s interests in questionnaire and student activeness observation sheet. The requirements test is in the form of normality test and homogeneity test with the value of L count = 0.663 initial interests data and L count = 0.172 final interests data which means the data is normally distributed. In the homogeneity test F count = 0.233 initial interests data and F count = 0.449 final interests data with homogeneous results. The data analysis technique was done by using the hypothesis t test and N-gain test. The results showed that the hand soap making practice with the addition of pineapple extract ( Ananas comosus L .. Merr) had an influence on students’ learning interest with N-gain of 7.6 in experimental class data and N-gain of 5.4 in control class data and from the t hypothesis test obtained T count > T table which T count = 6.90 and T table at level 0.05 is 2.01 so H o is accepted, which means that there was an influence of the handsoap making practice with the addition of pineapple skin extract ( Ananas comosus L. Merr) on student interests in learning. Keywords: Colloid; hand soap making practice; interests
Highlights
Chemistry is a branch of natural science that we often encounter in daily life
This research was an experimental research, which was a research in the form of the practice of hand soap making with the addition of pineapple skin extract
Merr) and IPA 2 class as the control class with conventional learning models obtained from observational data from 10 statements, where the qualitative statements are converted into quantitative form in order to obtain the results of observations of student activation in the form of numbers
Summary
Chemistry is a branch of natural science that we often encounter in daily life. Lots of students find it difficult to study chemistry because chemistry is generally in the form of abstract concepts. According to Rachmawati (2014) abstract concepts are concepts that are difficult to understand in studying chemistry. One of chemical materials in the form of colloidal concepts matter. The concept of colloid is one of the theoretical material whose are abstract. In these materials students are required to memorize the concepts
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