Copyright free music and sound effects for school projects
Each composition is produced by running a program found by searching the computational universe, taking the pattern the program produces, and converting it to a musical score.
For older students there is a math/science lesson here, for younger students just keep clicking the "create new" and "show variations" buttons until you get music you like.
Online music studio with recording, effects, virtual instruments and over 600 free loops and sounds. Need to sign up for a free limited account, more features with paid account.
Compose, read, print and hear notation and guitar tablature right in your web browser. Sign up for free limited account, classroom accounts available.
Drag and drop musical elements onto figure to animate the figure, try different combinations, mute and unmute for variation, record and share.
Create your own sound effects
Free, open source, cross-platform software for recording and editing sounds. Allows you to record live audio; edit sound files; cut, copy, splice or mix sounds together; or
change the speed or pitch of a recording.
Sources for free sound effects
Community powered site, its users share, upload, and download sound clips. No need to register to download.