What order should I put my work experience in on my resume if one of the jobs is "as needed"/event-basis?

My work history:

1. Aug 2013-Jun 2015 / Kindergarten assistant teacher

2. 2009 - Now (as needed basis) / Event Coordinator for a boxing gym

3. Nov 2011-Dec 2011 / Shopkeeper at Hallmark

4. Jun 2010-Aug 2010 / Cashier at Papa Johns Pizza

.....

What order should I put it in? The only jobs that look good on my resume are #1 and #2 but I don't want to only have 2 jobs on my resume so I probably should put the other 2 jobs right?

Anonymous2016-05-21T23:36:57Z

PRN. Just state when the prn job started and present...next to the job title you should put prn and list jobs from current to past