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Science · Grades 1–4

Observing, recording and comparing

Separate an observation from a guess about its cause.

Make a worksheet

Understand the idea

Record what you notice

Separate an observation from a guess about its cause.

Use a consistent measure

Compare the same feature with the same units.

Repeat carefully

Repeats can reveal variation and recording mistakes.

Worked examples

Which statement is an observation about a leaf?

The visible points can be checked.

The leaf has five visible points.

A strip measures 9 cm before cutting and 6 cm after cutting. How many centimetres were removed?

9 − 6 = 3.

3

Try it yourself

  1. Which tool is most suitable for measuring a pencil's length?

    1. a thermometer
    2. a calendar
    3. a ruler
    4. a balance

  2. Which heading best fits a column containing 4 cm, 6 cm and 7 cm?

    1. Shape
    2. Colour
    3. Name
    4. Height

  3. A learner writes The seed is 8 without a unit. What information is missing?

  4. Which pair can be compared directly without changing units?

    1. 12 s and 15 litres
    2. 12 cm and 15 g
    3. 12 g and 15 s
    4. 12 cm and 15 cm

Answers and marking notes

Answers and marking notes
  1. a ruler

    A ruler measures length.

  2. Height

    The values are lengths with units.

  3. The quantity being measured and its unit, such as a shoot height of 8 cm.

    Credit the need for an interpretable measurement.

  4. 12 cm and 15 cm

    Both values measure length in centimetres.

Preview material · independent educational review required. Grade bands are approximate, not official curriculum alignment.