Classes about sound with students (Alexandre Costa)
Electromagnetic Waves
https://www.tes.com/lessons/fkIC1qS8L6EnZQ/ondas-eletromagneticas-e-leis-da-reflexao
Sound and sound transmission - Microfone and Speaker
https://www.tes.com/lessons/eIRID0nIgPGKhQ/plano-de-aula-10-zg-17-05-2015
Support Materials
Prezi-Microfone and Speaker
https://prezi.com/sq81btpmwnli/microfone-e-altifalante/
Padlet - Sound and waves
https://padlet.com/alexandrejcosta/9ktz8t0wnasj