MINIMALISASI MISKONSEPSI KONSEP pH PADA MATERI HIDROLISIS GARAM DAN LARUTAN PENYANGGA DENGAN EKSPERIMEN BERBASIS MASALAH

Abstract

This study aims to determine the application of Problem-Based Learning
methods to minimizing student’s misconception on determination of pH of acidbase
mixture solution. The populations of this study were XI MIPA 4, 5, and 6
SMA N 1 Juwana. The sampling technique used is Purposive Random Sampling.
Samples are treated differently and then followed by postest. The statistical tests
used are normality test, two variance equations, hypothesis, and misconception
level analysis. Average grade of experimental class postest is 75.77 and control
class is 72.5. In the hypothesis test t292 test (2.44)> t (1.99) which means the
average cognitive learning outcomes of the experimental class is better than the
control class. In the analysis of misconception level, the result of the experimental class postest experienced misconception of level 1 is 4.1% and level 2 is 3%, while the control class experienced misconception of level 1 is 17.5% and level 2 is 3.4%. Based on the results of the research can be concluded that the application of experiment-based learning problem able to minimize student misconception on salt hydrolysis and buffer solution.
Keywords: experiment based problem, hydrolysis of salt, buffer solution,
minimization, misconception.