Measuring length and height (age 5+)
Measure and begin to record lengths and heights using non-standard and standard units
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1858 concepts · 9 subjects
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Length tells how long something is from end to end. First measure with same-size cubes laid in a straight line with no gaps. Then try a ruler and write the number with a unit such as centimetres.
Spend about 15 minutes measuring one object with cubes, then with a ruler, and recording both results.
Measure length with repeated equal units and begin measuring from ruler zero in centimetres.
Measure length with repeated equal units and begin measuring from ruler zero in centimetres.
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Learning resources
Extra practice links — they do not replace Gakuva’s teaching approach.
Illustrative Mathematics · Practice link — not the full lesson
Determining Length
Before you open · source notes
Choosing tools and units supports measuring length and height. Not every area calculation.
Free, no sign-in. A teacher solution is on the same page, so use the student view with your child.
Before you openAsk the learner to choose a tool and measure one object, then name the unit used.
Opening this link does not save learning or assess mastery.
Source, access and review notes
Public Illustrative Mathematics task page. The .html address responds HTTP 308 to this URL. An anonymous GET of this URL on 2026-11-12 returned HTTP 200 with no login or payment prompt. Where a teacher solution is present, it is on the same page as the student task; this check did not find a separate locked student view. An adult can use the student view section and should not read a solution aloud. Advertising was not observed in the fetched HTML text; that is not a browser, device, or ad-free guarantee. This is a paper or discussion task, not an automatically marked interactive game. Opening the link does not save practice or assess mastery. Diagrams on the page use missing or filename-only alt text, so they are not an accessible image equivalent. Accessibility still depends on an adult describing the picture.
Illustrative Mathematics. “Determining Length.” Licensed CC BY-NC-SA 4.0. External task; Gakuva does not copy, host, embed, or redistribute it.
CC BY-NC-SA 4.0 — link only
Check understanding
- Measure the length of a table using cubes and record the result
- Begin to use a ruler to measure in centimetres
- Record a measurement as a number with a unit
“If your child measures the length of a book using small cubes laid end to end, can they count how many cubes it takes — and then try measuring the same book with a ruler?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Measurement
- Age range
- Ages 5–9
Standards