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Measuring Classroom Objects

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Measuring Classroom Objects

Help plan a tidy classroom by measuring and comparing lengths. Use a ruler for centimetres and a metre ruler or tape for longer objects. Start at zero, keep the tool straight, and include the unit in every measurement.

A. Choose and estimate

Before measuring, make a sensible estimate. Remember: 1 metre = 100 centimetres.

1.Which is the best estimate for the length of a pencil: 15 cm, 15 m, or 150 cm?
  • 15 cm
  • 15 m
  • 150 cm
2.Hana is measuring the classroom door. Which tool is most suitable?
  • A small centimetre ruler
  • A metre ruler or tape measure
  • A paper clip
3.A table is 120 cm long. Is this longer or shorter than 1 metre? Explain using centimetres.

B. Measure and record

Measure three safe classroom objects. Record the actual length you find. For questions 4–6, answers will vary; check that each measurement includes cm or m.

4.Measure a small object, such as an eraser. Write its name and length in centimetres.
5.Measure a longer object, such as a book or desk. Write its name and length. Choose cm or m to suit your measurement.
6.Measure one more classroom object. Record the object's name and length, including the unit.

C. Compare the measurements

Use these sample measurements for questions 7–10.

Object

Length

Pencil

18 cm

Book

28 cm

Desk

1 m

7.Which object in the table is the longest?
8.Which object is the shortest?
9.How many centimetres long is the desk? Convert 1 metre to centimetres.
10.How much longer is the desk than the book? Show or explain your calculation in centimetres.
11.True or false: 1 metre is the same length as 10 centimetres. Correct the statement if it is false.
TrueFalse
12.Maia measured a ruler as 30 cm. She started measuring from the 2 cm mark instead of zero. What is the ruler's actual length?

3 printable pages

  • Measuring Classroom Objects, page 1 of 3: A. Choose and estimate

    Page 1

  • Measuring Classroom Objects, page 2 of 3: B. Measure and record, C. Compare the measurements

    Page 2

  • Measuring Classroom Objects, page 3 of 3: Desk 1m

    Page 3

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