ABSTRAK
Penelitian ini bertujuan untuk meningkatkan: (1) prestasi belajar siswa pada
materi stoikiometri melalui penerapan metode pembelajaran Problem Solving, (2)
kemampuan berpikir kritis siswa pada materi stoikiometri melalui metode
pembelajaran Problem Solving.
Penelitian ini merupakan Penelitian Tindakan Kelas (Classroom Action
Research) yang dilaksanakan dalam dua siklus. Setiap siklus terdiri dari empat
tahapan yaitu: perencanaan, tindakan, observasi, dan refleksi. Subyek penelitian
adalah siswa kelas X MIA 7 SMAN 1 Sukoharjo Tahun Pelajaran 2014/2015 yang
telah diberlakukan Kurikulum 2013. Pengumpulan data penelitian menggunakan
teknik tes untuk kompetensi pengetahuan dan kemampuan berpikir krtis, dan non tes
yaitu angket dan lembar observasi untuk kompetensi sikap dan lembar observasi
untuk kompetensi ketrampilan. Analisis data menggunakan teknik analisis deskriptif
kualitatif.
Hasil penelitian menunjukkah bahwa penerapan metode pembelajaran
Problem Solving dapat meningkatkan prestasi belajar dan kemampuan berpikir krtitis
siswa. Peningkatan prestasi belajar dapat dilihat dari hasil kompetensi pengetahuan,
sikap dan ketrampilan. Ketuntasan belajar siswa pada kompetensi pengetahuan
memperoleh persentase dari 68,13% pada siklus I meningkat menjadi 81,57% pada
siklus II. Ketercapaian aspek kompetensi sikap pada siklus I sebesar 77,95% dan
pada siklus II sebesar 86,19%. Ketercapaian aspek kompetensi ketrampilan pada
siklus I sebesar 72,95% dan pada siklus II sebesar 84,14%. Untuk peningkatan
kemampuan berpikir kritis siswa pada prasiklus, siklus I, dan siklus II yaitu 41,01%,
58,94% dan 76,28%.
Kata kunci: Problem Solving, pretasi belajar, kemampuan berpikir kritis
ABSTRACT
The purpose of this research were to improve: 1) students achievement in
stoichiometry throught the application of learning methods of Problem Solving, 2)
The critical thinking ability of students in stoichiometry through the application of
learning methods of Problem Solving.
This research was a Classroom Action Research which was conducted in
two cycles. Every cycle of four stages that were: planning, action, observation, and
reflection. This research subject is the students of class X MIA 7 SMAN 1 Sukoharjo
year 2014/2015 that have used Curriculum 2013. The collection of research data was
using test techniques for the learning achievement, knowledge and ability to think
critically and not test is using questionnaire, the observation sheet for competence of
attitude, and the observation sheet for competence of skill. Data analysis was using
qualitative descriptive analysis technique.
The result of this research was showing that the application of learning
methods of Problem Solving could improve learning achievement and critical
thinking ability of students. The improvement of learning achievement could be seen
from the result of knowledge competence, attitude, and skill. On the competence of
knowledge, mastery learning students from 68,13% in the first cycle increased to
81,57% in the second cycle. Aspect competence of attitude improvement from
77,95% in cycle I to 86,19% in cycle II. Aspect competence of skill improvement
from 72,95% in cycle I to 84,14% in cycle II. For the improvement of critical
thinking ability of students in a pre cycle, first cycle and second cycle that is 41,01%,
58,94% and 76,28%.
Key Word: Problem Solving, learning achievement, critical thinking ability