Lesson 4: Referents - Linear Referents Examples


EXAMPLE 1

Using a standard sheet of paper, how could you estimate the height of a doorway?

Solution


A sheet of paper is about 1 foot long. Count how many sheets of paper it would take to reach the top of the doorway. For instance, if it takes 8 sheets of paper, then the doorway is about 8 feet tall.

EXAMPLE 2

Name a referent to estimate the length of a driveway?

Solution


A person could use her stride length. Each adult stride length is about 1 metre long. If 25 strides are taken, then the driveway is about 25 metres long.

   Multimedia

A video describing FILL IN is provided.

EXAMPLE 2

When fishing in Alberta, there are legal restrictions on which fish you can keep and which ones must be released. In Lesser Slave Lake, Walleye must be longer than 43 cm in order to be kept. Using the hand in the photo as a referent, can this fisherman keep either of these Walleyes?

Walleyes caught in Lesser Slave Lake
Walleye #1 Walleye #2

Solution


An adult's closed hand is about 10 cm wide.

Walleye #1 is between 2.5 and 3 hands wide. This means the fish would be somewhere around 25 - 30 cm long, which is far below the legal limit. This fish needs to be returned to the lake.

Walleye #2 is between 4.5 and 5 hands wide. This means the fish would be somewhere around 45 - 50 cm long, which is over the legal limit. This fish could be kept.


Now, it is your turn! Complete the questions in your Chapter 7, Lesson 4 Practice Makes Perfect that refer to Linear Referents.



2014 © Alberta Distance Learning Centre