Capacity is how much something holds. Pour water from one container into another — does it fit? Spill over? You're measuring volume, hands-on.
Try this
- Estimate first — does the water from the cup fill the bowl?
- Pour and check
- Repeat with different shapes — tall narrow vs short wide
Tall narrow containers look bigger to our eyes than short wide ones — even when they hold less. The eye lies; pouring tells the truth.