In my Engineering class we were supposed to make headphones as a project and the presentation for my headphones are in the link below and the script for my presentation is below that.
https://docs.google.com/presentation/d/1FGi1-_oC86FiSZiAzxUtKyDX3wCD1K4uhyq_nbQnRzk/edit?usp=sharing
https://docs.google.com/a/davincischools.org/document/d/1zcg5wwgGVXT48twd97uDMEdMBt1yeBAld9yRMEN54-Q/edit?usp=sharing
https://docs.google.com/presentation/d/1FGi1-_oC86FiSZiAzxUtKyDX3wCD1K4uhyq_nbQnRzk/edit?usp=sharing
https://docs.google.com/a/davincischools.org/document/d/1zcg5wwgGVXT48twd97uDMEdMBt1yeBAld9yRMEN54-Q/edit?usp=sharing