MathematicsMeasurementAges 6–9

Measuring length (age 6+)

Measure the length of an object using same-size length units laid end to end with no gaps or overlaps

Lesson

Set out your lesson

Measure with equal units touching end to end.

Before teaching

Activity

Can discuss the supplied example in an accessible mode; adapt directions without supplying the target answer.

Policy

Check the learner can follow the model with support before moving on. Source prerequisite ordering is not learner mastery; return to prerequisite work when needed.

Printer, credit, and teaching notes

Use identical paper strips, large equal blocks or the supplied symbolic strip; a real book or table is optional. Do not compare mixed-size paper clips. Open S first, G together, then T alone; put S and G away before T. Keys stay adult-only. No purchase or printing is required; an unavailable physical observation remains pending, not passed.

Materials are ready in each step. Use them on screen or print just the current step. Put teaching examples aside before the learner tries.

Next: Show

Adult extras

What this lesson covers and its limits

These are bounded opportunities, not learner attainment. Partial and blocked source requirements remain so.

partial: Measure the length of an object using same-size length units laid end to end with no gaps or overlaps
Real book/table measurement conditional; the supplied symbolic strip teaches placement but is not a measured household object.
partial: Measure a book by laying paper clips end to end and counting them
Real book/table measurement conditional; the supplied symbolic strip teaches placement but is not a measured household object.
partial: Understand that the length measurement is the number of units that span the object
Real book/table measurement conditional; the supplied symbolic strip teaches placement but is not a measured household object.
partial: Avoid gaps and overlaps when placing units
Real book/table measurement conditional; the supplied symbolic strip teaches placement but is not a measured household object.
partial: If {{name}} is measuring the length of a table using identical toy bricks, can they lay them end to end with no gaps — and tell you how many bricks long the table is?
Real book/table measurement conditional; the supplied symbolic strip teaches placement but is not a measured household object.

Real book/table measurement conditional; the supplied symbolic strip teaches placement but is not a measured household object.

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1858 concepts · 9 subjects

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Teaching approaches

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Measure with equal units touching end to end.

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

Measure Me!

Open practice(new tab)

Before you open · source notes

Measure body lengths with same-size units laid end to end. Emphasise no gaps or overlaps; this is not a standard-ruler certification.

Free, no sign-in. A teacher solution is on the same page, so use the student view with your child.

Before you open

Ask how many units spanned the length and whether gaps or overlaps appeared.

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 2026-11-11 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. “Measure Me!.” 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 a book by laying paper clips end to end and counting them
Understand that the length measurement is the number of units that span the object
Avoid gaps and overlaps when placing units

“If your child is measuring the length of a table using identical toy bricks, can they lay them end to end with no gaps — and tell you how many bricks long the table is?”

Curriculum record

Type: Procedural
Subject: Mathematics
Domain: Measurement
Age range: Ages 6–9

Standards

acara-v9:AC9M1M02acara-v9:AC9M2M01ccss-math:1.MD.2the-ontario-curriculum-mathematics-2020:ON-MATH-2020-G1-E2the-ontario-curriculum-mathematics-2020:ON-MATH-2020-G2-E2.1the-ontario-curriculum-mathematics-2020:ON-MATH-2020-G3-E2.3