We had a request for an Online Mechanical Metronome - so here it is. Change the Beats Per Minutes - change the Sound. Easy.
This Metronome is free - and can be used full screen and is available for download.
We hope Mrs. Dennis and her class find it useful - as well as all the other online-stopwatch.com users :-)

Metronome - Online Metronome - Countdown - Stopwatch