PENGGUNAAN HYPOTHETICAL LEARNING TRAJECTORY (HLT) PADA MATERI ELASTISITAS UNTUK MENGETAHUI LINTASAN BELAJAR SISWA KELAS X DI SMA NEGERI 1 INDRALAYA UTARA
Abstrak: This study aims to a
learning trajectory about elasticity for tenth grade students ofSMA Negeri 1
Indralaya Utara by using Hypothetical Learning Trajectory (HLT). The methodused
in this study is design research. The subjects of this research were six
students in the pilotexperiment and 24 students in the teaching experiment. A
set of activities designed in HLT wasapplied and developed to gain the
understanding of elasticity concept. The HLT designedduring the preparation
phase was compared to the students’ actual learning trajectory duringthe
implementation in the teaching experiment. Retrospective analysis of the
teachingexperiment showed that students have diverse conjecture thinking in
understanding the conceptof elasticity. This learning trajectory describes the
development of student’s understanding inmaterial of elasticity during the
learning process that consists of learning goals, learningactivities and
conjecture of students’ thinking. Students who initially assumed that
elasticmaterial only rubber and spring, after the observing and classifying
objects of elastic and
nonelasticactivities,startedtounderstandtheconceptofelasticityandtheelasticlimit.Inthenextactivity,choosing
plastic experiment, students could determine the modulus of elasticity of
anobject. Some students assumed that all spring have the same constants, after
Hooke’s lawexperiment and created the graphs of Hooke’s law, student understood
that the elasticity of thespring depends on the spring constant. It was got by
students analyzing about the relationshipof force F with the length of the
spring (extension ). Based on this
research, it was foundthat the use of HLT could determine the students'
learning trajectory in understanding theconcept of elasticity.
Penulis: Putri Ramadhanti
Kode Jurnal: jpfisikadd150695
