As Robby and Miriam came in from play for a little refreshing juice, I heard from the kitchen the squabbling one expects of near-aged siblings:
Miriam I can add big numbers. Rob Oh brother! Miriam I can. I can do one thousand and thirty five plus two thousand. Rob Easy. Miriam No. Three thousand and thirty five.
When I asked Miriam later where she got those numbers for adding, she replied, “From the adding you and I did the other day.”
These incidents document the ways computation crops up in Miriam’s world.