Comparing Lengths & Heights
Compare two objects directly by length or height and describe the difference using language such as long, short, tall, longer, shorter, taller, double, half
What a learner can do afterwards
- Stand two children back-to-back and say who is taller/shorter
- Directly compare the heights of two towers and describe one as taller
- Use 'longer' and 'shorter' to compare two ribbons placed side by side
1 · Read
Put two things side by side to compare. Line up one end of each thing. Then look at the other end. One is longer, and the other is shorter. Or one is taller, and the other is shorter.
Maya and Sam stand back-to-back. Maya's head is higher. Maya is taller than Sam. Sam is shorter than Maya.
To compare fairly, line up one end of each thing. Then look at the other end.
Line things up, then look which end is longer or taller.
Rewritten readings were written for this dataset.
More to read
16.2: Measuring with Different-Sized Units
You can measure with cubes, hands, or steps. Line the units up with no gaps and no overlaps, end to end.
Count the units to read the length. A ribbon that fits 6 cubes is 6 cubes long. Same units every time keep measures fair.
16.1: Anchoring Units of Measurement
Taller means reaching higher. Stand two children back to back and see whose head is higher up.
Longer and shorter compare lengths side by side. Lay two ribbons next to each other with the ends lined up. The one that sticks out is longer.
Say what you measured with
We measure how long, how tall or how far. Try cubes or hand spans for small things. Use steps or metres for bigger things.
Say the number and what you used. A length of 6 cubes tells us more than just 6.
Measurement: FAQ
Ordering by size lines things up from shortest to longest. Compare two at a time until every pair sits in order.
Words like taller, shorter, longer, and shortest describe your order. Say the order out loud to check it sounds right.
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2 · Watch
به انگلیسیTake it off screen
Where it sits
Where this leads
Jobs that lean on this skill. Follow one to see everything it is built on.
17 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.