Geek my class — Bouncyballs.org is a noise meter for your class....
Noisy Classroom? Try this! – Technology in the class
Teach Starter - How neat is this...monitor classroom noise level with virtual bouncy balls! It uses the microphone on your laptop, you can 'see' the noise level and so can your students!!
Monitor Classroom Noise with Bouncyballs.org - Classroom Freebies
bouncyballs org - YouTube
Comment utiliser Bouncy Balls pour enseigner aux élèves la gestion du bruit | Crack-net
Free Technology for Teachers: Two Browser-based Noise Meters That Show Students How Loudly They Speak
The Teacher Spot: Teacher Resources: Classroom Management GOLD! Bouncing Balls Website Triggered by Sound!
Bouncy Balls - Bounce balls with your microphone! | Pearltrees