Abstract
Considering the 21st century skills and the importance of STEM education in fulfilling these skills, it is clear that the course materials should be materials that bring students together with technology and attract their attention, apart from traditional materials. In addition, in terms of the applicability of these materials, it is very important that the materials are affordable and easily accessible. In this study two open ended resonance tube, Computer and speaker for generate sound with different frequencies, Arduino UNO, AR-054 Sound Sensor, Green LED and 220 ohm resistance were used for measure the speed of sound in air at room tempature. With the help of sound sensor, two consecutive harmonic frequency values were determined and the fundamental frequency was calculated. Using the tube features and the fundamental frequency value, the speed of sound propagation in the air at room temperature was calculated as 386.42 m/s. This value is theoretically 346 m/s. This study, in which the propagation speed of the sound is calculated with very low cost and coding studies with 12% error margin, is important in terms of hosting all STEM gains and can be easily applied in classrooms.
Abstract (translated)
考虑到21世纪技能以及STEM教育在满足这些技能方面的重要性,显然课程材料应该包括能够与学生科技联系起来的材料,并吸引他们的注意,而不仅仅是传统材料。此外,对于这些材料的适用性,非常重要的一点是它们要价格实惠且易于获取。在这个研究中,使用了两个开放的共振管、计算机和扬声器,以产生不同频率的声音,并使用Arduino UNO、AR-054 Sound Sensor、绿色LED和220欧姆电阻来测量空气中的声速。通过使用声音传感器,确定了两个连续的谐波频率值,并计算了基本频率。利用管的特性和基本频率值,计算出了空气中的声速,其理论值为346米/秒。这项研究,以非常低成本计算声速和有12%的误差范围为重要的是承载所有STEM成果的关键,且可以在教室中容易应用。
URL
https://arxiv.org/abs/2301.10325
