Best OS/Max/Jitter combo for old G3 macs

Nadav Assor's icon

Hi All
I'm doing a small, lo-budget workshop during which I will teach the basics of max/msp and jitter. I was lent some old iMac G3's (500MHz, 384 mb RAM) for this, and was wandering what are the best OS, Max and Jitter versions I should install to get the most out of these old horses...
Any ideas/experience would be welcome.
Thanks
Nadav