Content Validity and Scoring of Two Tier as Measuring Instrument of Science Process Skills for Knowledge Aspects in Chemistry Learning
Abstract: Problems in
chemistry learning related to the three levels, namely the macroscopic,
sub-microscopic, and symbolic (representational) (Barke, 2009: 27). During
chemistry learning, student’s abilities to understand the roles of each
representation level and transfer to another level is an important aspect for
produce an explanation that can be understood. The curriculum of 2013 mandates
that the essence of a scientific approach to learns through the Science Process
Skills. Two-tier used as an instrument for measuring knowledge aspect because
its abilities to analyze the cognitive skills of the students. Through
two-tier, students just not pick the answer on items but also provide a reason
for the answers are chosen so the cognitive processes can be observed and
measured. As an instrument to measure the Science Process Skills, the
fulfillment validity of the content becomes important. This two-tier instrument
has good content validity between 0.78 to 1.0. Therefore, the scoring system
that used in the examination students’ answer sheets is important part of this
instrument to analyze science process skills student.
Author: Sri Yamtinah, Sulistyo
Saputro, Haryono, Budi Utami
Journal Code: jppendidikangg160057
