Audacity is a free audio recording and editing software that can be used in the classroom. It has simple, intuitive controls and can record multiple audio tracks. The document recommends downloading Audacity from its website and provides links to tutorial videos on how to use it. For classroom use, students need access to computers to download and practice with the software. Additional resources like manuals are available online to help learn Audacity. Since it's free, Audacity is an inexpensive option for audio work inside and outside the classroom.