# Scale Matters

Students explore a variety of experiences in the use of scale on a number line.

### Teacher notes

• Two activities are provided. In 'Name the number' students identify the number that corresponds to a highlighted point on the line. In 'Select the spot' students identify where a given number goes on the number line. A ruler is available to assist students after their first attempt.
• The learning objects assist student understanding of scales as diagrammatic representations reflecting the placement of unit lengths along a line; scales are additive and multiplicative, in that parts of scales can be separated and combined and scales can be discrete (whole numbers) or continuous (e.g. decimals, fractions).
• The learning objects provide feedback to the student about accuracy of placement or identification of the number.

### Learning objects

 Scale matters: onesThis learning object makes use of a scale of ones. Scale matters: tensThis learning object makes use of a scale of tens. . Scale matters: hundredsThis learning object makes use of a scale of hundreds. . Scale matters: simple unitsThis is an aggregated learning object combining Scale matters: ones, tens and hundreds. Scale matters: tenthsThis learning object makes use of a tenths scale. Scale matters: hundredthsThis learning object makes use of a hundredths scale. Scale matters: tens of thousandsThis learning object makes use of a tens of thousands scale. Scale matters: negativesThis learning object makes use of negative numbers. Scale matters: range of numbersThis is an aggregated learning object combining four other learning objects: hundredths, tenths, tens of thousands and negatives.