more materials?

so i stopped by afterschool, before getting dashiell. it was a little before 2:30. looks as if more materials were delivered, but there was noone there working. seems odd to me because it's a seemingly nice day, still pretty early in the afternoon, and noone was there? late lunch break?! i don't know.
i only noticed a few pieces of wood here and there that had looked to be cut into smaller pieces; but nothing appeared to be going "up".