Distinguish additive change from multiplicative change in tables, graphs, and contexts.
Read change type from a story
Problem
A jar gets \(4~\text{more}~\text{marbles}~\text{each}~\text{day}\). Classify the change as additive or multiplicative and state the repeated amount or factor.
Big Picture
What this problem is really about
Story language identifies the operation before any starting value is known. Ask whether the same amount is added each day or the current total is multiplied by a factor, and represent a few symbolic consecutive totals if needed. The classification depends on that repeated action, while the stated daily amount or factor supplies the size of the change.
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