review jurnal internasional

1. JURNAL REVIEW
Dosen Pengampu:
Prof. Dr. Abdurrahman, M.Si
Novinta Nurul Sari, S.Pd., M.Pd

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Tittle
Difficulties in Understanding
Mechanical Waves:
Remediated by Problem-
Based Instruction
Stella Teddy Kanyesigye,
Jean Uwamahoro, dan
Imelda Kemeza
American Physical Society

3. Chania Pitrisia
2113022046
Gustina Adellia
2113022064

5. This research aims to analyze the impact of problem-based learning
(PBL) in improving physics students' conceptual understanding of
mechanical waves. This study used a quasi-experimental, pretest-post-
test control group design with PBL teaching as the teaching
intervention. Participants in this study were 239 physics students from
19 secondary schools in Western Uganda. Researchers analyzed the
data with SPSS v.23.0 using a two-way repeated analysis of variance
test. This research found that unlike the superposition of mechanical
wave concepts, PBL effectively increased students' understanding of
propagation, reflection, and standing waves more than ordinary or
traditional teaching methods. Teachers are advised to teach with PBL
to assess students' difficulties in order to correct them and increase
their understanding.

6. This research focuses on the use of problem-based learning (PBL)
instruction to improve physics students' conceptual understanding of
mechanical waves. Previous studies have shown that traditional
teaching methods, which primarily involve teachers teaching from
textbooks, can hinder students' understanding of physics concepts.
Thus, this study aims to address this problem by implementing PBL
instruction, which promotes active learning and encourages the free
exchange of ideas among students. This study recommends that
teachers use PBL instruction to assess and overcome students'
difficulties in understanding mechanical waves.

7. This article discusses the conceptual framework underlying the
use of problem-based learning (PBL) instruction in physics
education. Current teaching methods in classrooms are
influenced by the type of teacher's teaching and learning
experiences, curriculum guidelines, and learning theories. PBL
involves students working collaboratively in groups, identifying or
creating problems, and suggesting solutions using available tools.
The teacher's role in PBL is to facilitate the problem-solving
process, bring discussion groups together, ask investigative
questions, and encourage student participation. PBL supports the
development of critical thinking, reflective thinking, and curiosity
among students.

8. The research in this article focuses on the impact of problem-
based learning (PBL) instruction on improving physics students'
conceptual understanding of mechanical waves. This research
analyzes students' understanding of various mechanical wave
concepts, including propagation, reflection, and standing waves
through a pretest.
This study aims to answer the following research questions:
1. Does problem-based learning instruction improve physics
students' understanding of key topics in wave mechanics?
2. What difficulties do students face in mechanical waves before
and after learning through traditional teaching methods or
problem-based learning methods?

9. • This study uses a quantitative research approach with a quasi-
experimental design. A pre-test and post-test control group
experimental design was used, with Problem Based Learning
(PBL) as the intervention and Traditional Teaching Methods
(TTM) as the control.
• This study used a cross-sectional survey technique to collect
data. The research instruments used in this study were
validated and reliable, ensuring the internal content validity of
the study.
• This study included a large sample size of 239 physics
students from 19 secondary schools in Western Uganda,
allowing generalization and replication of the data. Data
analysis was carried out using repeated two-way analysis of
variance tests with SPSS v.23.0. The study also included a
test-retest pilot study to assess the reliability of the research
instrument.

10. This study discusses the impact of problem-based learning (PBL)
instruction on improving students' conceptual understanding of
mechanical waves. This research compares the effectiveness of PBL
instruction with traditional teaching methods in overcoming students'
difficulties in understanding the concept of mechanical waves. The results
of this study recommend that teachers use PBL instruction to assess
students' difficulties and improve their understanding of mechanical
waves.
This research emphasizes the importance of using conceptual
understanding tests to evaluate students' difficulties and suggests active
learning methods such as PBL to improve alternatives and poor
understanding. In addition, this research also highlights the need for
further research to explore the correlation between attitudes and
conceptual understanding in physics.

11. This research concludes that problem-based learning (PBL)
instruction is effective in improving students' conceptual
understanding of mechanical waves, especially in the areas of
propagation, reflection, and standing waves. The research
results indicate that teachers should incorporate PBL
instruction to assess and overcome students' difficulties in
understanding the concept of mechanical waves.

12. This research recommends:
1. Use of conceptual understanding tests to evaluate student
difficulties and adoption of active learning methods such as
PBL to improve alternative and poor understanding.
2. Further research is needed to explore the correlation
between attitudes and conceptual understanding in physics.
3. The following research emphasizes the importance of using
reliable and validated research instruments to ensure the
internal content validity of the research.
4. As well as subsequent research, it also emphasizes the
need for larger sample sizes and research replication to
allow generalization of findings to a larger population.

14. The authors of this journal article are Kanyesigye, Uwamahoro, and
Kemeza. They are affiliated with various academic institutions, including
the University of Rwanda's Faculty of Education and the African Center of
Excellence for Innovative Teaching and Learning in Mathematics and
Science. Its relevance to the journal topic can be seen from its focus on
problem-based learning (PBL) as a learning method to improve students'
conceptual understanding of mechanical waves in physics. The author
also discusses the challenges students face in understanding physics
concepts and the need for active learning strategies, which is in line with
the journal's focus on the impact of PBL on students' understanding of
mechanical waves in physics. Overall, the authors' expertise in the field
of education, use of relevant theoretical frameworks, and empirical
research methods demonstrate their relevance to the journal topic.

15. In the introduction to this journal, the authors put forward several relevant points
of argument.
1. Their authors highlight the difficulties students face in understanding the
concept of mechanical waves in physics, as well as their relationship to the
teaching methods used.
2. The author also emphasizes the importance of active student involvement in
the learning process, as well as the need for learning strategies that
encourage active student involvement.
3. The authors refer to previous research showing that engaging students in
interactive engagement strategies can improve their understanding of
concepts.
4. Another argument presented is the need for a problem-based learning (PBL)
approach as an instructional method that can increase students'
understanding of physics concepts, especially in terms of mechanical waves.

16. The originality of research in this journal can be found in several aspects:
1. This research addresses specific challenges to students' understanding of
wave mechanics in physics, particularly in the Ugandan context, which may
not have been widely explored in previous literature.
2. Additionally, the focus on problem-based learning (PBL) as a learning
method to overcome these challenges contributes to the originality of the
research. This research also emphasizes the need for active learning
strategies and the potential impact of PBL on students' conceptual
understanding, thereby adding to the originality of the research.
3. The use of mechanical waves conceptual survey (MWCS) and the
application of a quasi-experimental design with pretest and post-test control
groups contribute to the originality and rigor of the research methodology.

17. In this research, the authors selected and included theoretical studies
that were relevant to their research focus. They use social
constructivism theory to support the use of problem-based learning
(PBL) as an instructional method. They also refer to previous research
showing that engaging students in interactive strategy interactions can
improve their understanding of concepts. In addition, the authors also
refer to active learning theory and active learning strategies in physics.
The selection and scope of this theoretical study supports a strong
theoretical foundation for their research and is relevant to the research
focus on the influence of PBL on students' understanding of wave
mechanics in physics.

18. The methodology used in this research is a quantitative research approach with
a quasi-experimental design using cross-sectional survey techniques. This
study used a pretest and post-test design with a control group, where PBL was
used as an intervention in the experimental group and traditional teaching
methods (TTM) were used in the control group.
The relevance of this methodology lies in its ability to provide a solid
understanding of the impact of PBL on students' understanding of wave
mechanics in physics. By using a quasi-experimental design, this research can
provide strong evidence about the effectiveness of PBL in increasing students'
understanding of physics concepts. In addition, the use of cross-sectional
survey techniques allowed researchers to collect representative data from the
population of grade 13 physics students of Mitooma district, Uganda, so that the
results of the study can have broader relevance in the context of physics
education in Uganda.

19. They identified the difficulties faced by students in
understanding the concept of mechanical waves and their
surroundings with the teaching methods used. The author
also refers to previous research which shows that involving
students in interactive strategy interactions can improve their
understanding of concepts. They also discussed the
importance of using problem-based learning (PBL) in
overcoming students' difficulties in understanding physics
concepts, as well as how PBL can help students develop
problem-solving skills.

20. This research succeeded in showing the effectiveness of problem-based
learning (PBL) in increasing students' conceptual understanding of
mechanical waves in physics. The quasi-experimental design and use of
PBL as a teaching intervention provide valuable insight into the impact of
this learning method on students' understanding of specific physics
concepts. The findings show that PBL is very effective in addressing
misconceptions related to propagation, reflection, and standing waves.
However, this research also identified areas where PBL does not have
the same level of impact, such as in the understanding of wave
superposition. Overall, the success of this study lies in providing evidence
of the benefits of PBL in overcoming students' difficulties and increasing
their understanding of physics concepts, while highlighting areas for
further exploration and improvement.

21. The findings of this research are in line with previous research which has
shown the effectiveness of problem-based learning (PBL) in improving
students' conceptual understanding in physics subjects. This study builds
on previous literature that has highlighted the potential of PBL in
overcoming students' difficulties and improving their understanding of
certain physics concepts. Additionally, these results are in line with
previous research that emphasizes the importance of interactive
engagement strategies, such as PBL, in improving students'
understanding of physics concepts. The current research contributes to
existing research by providing further evidence of the positive impact of
PBL on students' conceptual understanding of wave mechanics in
physics, thereby strengthening the relevance of PBL as an effective
learning approach in physics education.

22. The conclusion of this research is that problem-based learning (PBL) is effective in
increasing students' conceptual understanding of mechanical waves in physics.
PBL has been proven to be able to improve students' understanding of the main
concepts in mechanical waves, such as propagation, reflection and standing
waves. However, PBL does not have the same effect in improving students'
understanding of wave superposition.
The suggestion for this research is to continue further research that can explore
the factors that influence the effectiveness of PBL in the context of students'
conceptual understanding of physics, including the correlation between attitudes
and conceptual understanding. In addition, further research could expand the
scope to understand why PBL does not have the same effect in improving
students' understanding of wave superposition. Another suggestion is to consider
the use of different teaching methods in different contexts to expand the generality
of these findings.

23. Yes, the conclusions of this study answer research needs by providing
evidence that problem-based learning (PBL) is effective in increasing
students' understanding of mechanical waves in physics. The research
results showed that PBL succeeded in improving students' understanding
of propagation, reflection and standing waves better than traditional
teaching methods. In addition, this research also identifies students'
difficulties in understanding the concepts of mechanical waves and
suggests the use of PBL as a method to overcome these difficulties. Thus,
the conclusions of this study provide relevant answers to the need to
understand the effectiveness of PBL in increasing students' understanding
of physics concepts, especially in the context of mechanical waves.

24. The biggest contribution of this research is showing that problem-based
learning (PBL) is effective in increasing students' conceptual
understanding of mechanical waves in physics. The results of this
research provide strong empirical evidence about the effectiveness of PBL
in the context of students' conceptual understanding of physics, especially
in the topic of mechanical waves. This research also identifies students'
difficulties in understanding the concepts of mechanical waves and
suggests the use of PBL as a method to overcome these difficulties. In
addition, this research contributes to showing the potential of PBL as an
effective teaching method in increasing students' conceptual
understanding of physics.

25. A research problem that remains unresolved in this journal is that it does
not consider special groups such as people with special educational
needs. Therefore, this study does not provide insight into how PBL can
influence the conceptual understanding of students from these groups. In
addition, this research also does not consider social or environmental
factors that might influence the effectiveness of PBL in increasing
students' conceptual understanding of physics.

26. Another idea to solve the same problem in this journal is to expand the
research to include special groups, such as students with special
educational needs. By including these groups, research can provide more
comprehensive insight into how PBL can influence the conceptual
understanding of students from different backgrounds. In addition,
research can consider social or environmental factors that may influence
the effectiveness of PBL in improving students' conceptual understanding
of physics. In this way, research can provide a more holistic insight into the
effectiveness of PBL in a broader context.

27. Weaknesses in the journal include a lack of research that considers
special groups, such as students with special educational needs. This
research also did not consider social or environmental factors that might
influence the effectiveness of PBL in increasing students' conceptual
understanding of physics. In addition, this research does not specifically
focus on overcoming students' difficulties in understanding the concepts of
mechanical waves before and after learning through traditional or PB
methods.