lost job after 5 wks orientation

i was fortunate to land a job at a nursing home subacute last month. but i was recently told that i'm not quite ready to be on my own taking care of 20 pts, my orientation can't be extended so they let me go. now the question is, should i put this job on my resume? i mean i learned alot from it. Also what would I say to an amployer if asked why i only lasted there a month? thanks for your help
I wouldnt