Optional activities Note that these activities are voluntary. Completing the activities at the end of this lesson is up to your discretion. Stay safe out there.
Answers from last week:
4 figure grid reference: 2540
6 figure grid reference: 254409
There are two ways to describe the distance between feature; point to point, or along a route. Point to point measures the straight line between points. Measuring along a route might be an obvious path, road, or along your planned route.
To measure a straight line between two points:
a. take a piece of paper and place the upper edge on the map so that it touches the two points;
b. mark the points on your paper;
c. clearly indicate you start and finish points;
![](https://i0.wp.com/2313cadets.ca/wp-content/uploads/2020/04/Lesson2-image1.png?resize=583%2C308)
d. now place the paper on your scale bars; and
e. calculate the distance – in the example below it is 4800m.
![](https://i0.wp.com/2313cadets.ca/wp-content/uploads/2020/04/Lesson2-image2.png?resize=787%2C294)
To measure along a route (road, trail, stream, etc) between two points:
a. lay a piece of paper along the first section and mark the paper;
b. now pivot the paper until it lays along the second section, mark your piece of paper at the end of the section;
c. repeat this process until you have reached point B; and
d. compare the distance marked on the paper to the bar scale and calculate the distance.
a. lay a piece of paper along the first section and mark the paper;
b. now pivot the paper until it lays along the second section, mark your piece of paper at the end of the section;
c. repeat this process until you have reached point B; and
d. compare the distance marked on the paper to the bar scale and calculate the distance.
![](https://i0.wp.com/2313cadets.ca/wp-content/uploads/2020/04/Lesson2-image3.png?resize=768%2C515)
Confirmation activity You will need to download the Elkwater map PDF for this activity. Print it out at 100% scale.
1. Find GR 505983 and 512004.
2. What is the straight line distance between these two points?
3. What is the distance along a route?
1. Find GR 505983 and 512004.
2. What is the straight line distance between these two points?
3. What is the distance along a route?
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