Development of a do-it-yourself physics apparatus for STEM learning: standing wave generator

This study aimed to develop and investigate the efficiency of the DIY Standing Wave apparatus for STEM demonstration and laboratory in Grade 7 for the topic transverse waves under the K-12 curriculum. The efficiency of the apparatus was determined through successive experiments and the percentage error was compared to the Mechanical Wave Vibrator of the College of Science and Mathematics, MSU-IIT. The assessment on the DIY Standing Wave apparatus manual was the basis for the modification of the DIY Standing Wave apparatus and revision of the manual. Results revealed that there was no significant difference in the percentage error between the DIY Standing Wave apparatus and Mechanical Wave Vibrator. The DIY Standing Wave apparatus and the Mechanical Wave Vibrator had an average percentage error of less than ten percent, so the DIY Standing Wave apparatus was also efficient. The manual for the DIY Standing Wave Apparatus can guide teachers on what materials are needed and how to fabricate the apparatus. The manual was appropriate for the DIY Standing Wave apparatus and was intended for the in-service Physics teachers. The apparatus can be a tool for an effective STEM learning.