a friendly cafeteria worker carefully places individual apples from a large basket onto students' lunch trays. She methodically takes one apple at a time and places each one precisely on each tray. As students move through the line, each receives exactly one apple while she keeps track mentally. The worker glances at her remaining apples to determine how many students she can still serve. Students wait patiently as she calculates whether she has enough fruit for everyone in line. someone determining the amount or quantity of countable things