Measuring length (age 7+)
Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, metre sticks, and measuring tapes
Lesson
Set out your lesson
Choose a length tool and start at its zero mark.
Before teaching
Ask the learner to explain one prerequisite idea before starting. If uncertain, revisit it; graph order is not learner readiness.
Check readiness rather than assuming source graph order establishes attainment.
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Teaching approaches
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1 approach
Choose a length tool and start at its zero mark.
Choose a length tool and start at its zero mark.
Family records and proof options
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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
High Jump Competition
Before you open · source notes
Jump-height differences support measuring length with addition and subtraction. Not every volume word problem.
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 find how much longer one jump is than another using the same unit.
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. “High Jump Competition.” 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
- Choose the most appropriate tool for measuring a given object
- Align the zero mark of a ruler with the end of the object and read the measurement; for an offset or broken ruler, count the unit spaces or subtract the starting reading from the ending reading (e.g. 3 cm to 10 cm is 7 cm)
- Measure lengths in inches, feet, centimetres, and metres using the correct tool. For example, use the centimetre marks on a metre stick to explain that 1 m is 100 cm, or mark off and check a line of a given length with a ruler.
“If your child needs to measure a piece of fabric about 80 cm long, can they pick the right tool — a short ruler or a tape measure — and use it accurately?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Measurement
- Age range
- Ages 3–9
Standards