As a physics teacher, I find that
teaching and learning sound wave can both challenging simply because it is an
abstract concept; sound wave cannot be seen and ones perception of sound may
varied from one person to another. Thus hands-on activities are often
recommended to improve students’ understanding and strengthen their knowledge.
Software such as Visual Analyzer (VA) is
a real time program which simulates a set of electronic instruments such as
oscilloscope, spectrum analyzer and wave generator. Students are able to ‘see’
the sound waves for the experiments which requires them to study the properties
of sound waves such as reflection, diffraction and interference.
Students work in groups as I gives them
situation for them to solve by experimenting. These groups consist of
heterogeneous academic performance to maximize students’ interaction and
learning. They utilized their previous knowledge and apply it in order to
conduct the experiment. To avoid dominance by a single student, the group
leaders assign roles as the students identified the variables, making
observation and tabulate the data collected for further analysis and sum up
with a conclusion. Finally, they present their findings to the class to promote
communication skills and build confidence.
I monitor their progress as they conduct
the experiment independently by utilizing the apparatus and materials provided
to incorporate problem solving creatively. Upon having trouble in collecting
data, they are encouraged to find solution to minimize error and being honest
in collecting data even though the experiment data is imperfect, to promote
value and ethics.
As I adapt technology into the teaching
and learning, I found that students are more independent, build better
understanding and concept construction, show significantly greater academic
achievements and exhibit more favorable attitudes towards learning physics. I
shared this sound waves learning method by VA in my blog http://cikgufazilah.blogspot.com/2018/04/see-sound-3-interference-of-sound.html
smartphones apps shows the spectrum of sound waves
smartphones apps generate frequency
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