This paper describes a fully structured teaching sequence, based on Problem-Based Learning (PBL) and within a Constructionist framework, which familiarizes students with one of the main characteristics of sound waves· its frequency. In order to achieve this goal, students will be working with an Arduino-based arrangement, in which they will experiment by pushing different buttons on the breadboard, producing certain frequencies of notes and reading the value of frequency on an LCD (Liquid-Crystal Display) screen, connected to the Arduino Processor.
The main aim of the sequence is to provide students with the opportunity to reinforce their understanding regarding the nature of sound as a wave and specific sound properties by building the arrangement themselves, with limited guidance by the instructor (researcher). Students will examine the relationship between the pitch of the sound and the buzzer’s vibration and explore the different analogue signals produced by a circuit configuration, called a resistor ladder. Acknowledging that most technical skills and knowledge require the acquisition of the English language, the current paper suggests that a CLIL methodology will be applied in order to enhance students’ content and language acquisition at the same time.