Measurement
Measurement compares how long, heavy, or full things are.
- Compare and order objects by length, mass (heavy/light), and capacity (how much it holds).
- Measure using non-standard units — like paper clips or blocks laid end to end with no gaps.
- Begin to tell time to the hour and name the days and months.
The key rule: use the same unit, lined up evenly, so the comparison is fair.