explanation of random short posts

In case it's not as self-evident as I originally thought...

I was on a field trip with 8th grade students to Washington DC, and I didn't want to carry around pen and paper everywhere I went. So, every time someone thought of a good idea, I posted it here from my cell phone.

If you have any other excellent ideas regarding preparation for and implementation of a DC field trip, please comment! We sometimes found it difficult to keep the students interested and respectful throughout the long days.