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Level Three > Geometry and Measurement

# Going the Distance

Student Activity:

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Achievement Objectives:

Purpose:

This is a level 3 measurement and geometry strand activity from the Figure It Out series.

Specific Learning Outcomes:

use scale maps to measure distances

Required Resource Materials:
FIO, Level 3, Measurement, Going the Distance, page 3
ruler
classmate
Activity:

This activity involves estimating and measuring length in centimetres. The major focus is to calculate distances using a scale drawing.
This is an ideal activity to encourage estimation. Initially, you could ask students to estimate the distance in centimetres between two towns. Have them make a chart to help them convert this to the actual distance in kilometres, for example:

Those who are confident with the idea of scale drawing could estimate the distance in kilometres straight away and explain their answer.
Encourage accuracy with the use of the ruler by insisting that students look directly down on the town they are measuring as they align their ruler and read the measure. Make sure that they start at the beginning of the scale on the ruler and not at the 1 centimetre mark.

Change the scale to provide some additional practice with calculating a scale distance, for example,
1 centimetre : 2 kilometres
1 centimetre : 4 kilometres
1 centimetre : 8 kilometres
1 centimetre : 16 kilometres
This could be extended to:
1 centimetre : 2.5 kilometres
1 centimetre : 7.25 kilometres
Make a point of focusing students’ attention on how the scale is written using the colon and how to interpret the instruction “The scale is 1 centimetre to 4 kilometres”. Help them to see that this is the same instruction as saying “1 centimetre on the drawing shows 4 kilometres of actual distance”.
Ensure that students who make up some distance problems, as in question 3, are responsible for checking the answers to their problems and are prepared to explain their answers if necessary. This will encourage them to make up sensible problems and help reinforce their understanding of scale measurement.

1. There are many possible routes. Some routes will have equal distances while others will be different. Here is an example of a route with the distances measured. The scale is 1 cm : 1 km.

2. 18 km

AttachmentSize
GoingtheDistance.pdf229.73 KB

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