do they tell you to sit at a desk and monitor, or be up and move around?

Honneycut says to get up and move around. Teachers should be moving among students helping, talking about what they are doing.

some of it can be managed by classroom layout. Classic computer lab should be done in a U shape to best monitor

if these are small netbook type devices, the easiest mgmt technique is the keep them closed until ready to work

we use Apple Remote Desktop. Some success. Spotty connection & kids disappearing. Not sure if it's our wireless or ARD app or kids offline