As it turned out, my two classes were going to be made up of eight and nine year olds. Concentration on their part and patience on mine would be paramount to a fruitful experience.
Finally in the right place, I met with the substitute teacher for the two classes in question. Since he was not comfortable having me take over the class, we agreed that the assigned teacher should contact our Board of Directors to re-schedule a new visitation date.
How to fill my new found down time?