A scale factor is the multiplier between similar shapes that describes how large one shape is compared to the other.

A degree of accuracy shows how precise a number or measurement is.

Checking and securing understanding of drawing accurate scaled diagrams

Maths

In the angles unit, pupils reasoned through more complex problems involving angles. In the bearings unit, pupils apply their knowledge of angles in order to calculate bearings and solve angle problems within the context of bearings.

Bearings

A {{ }} factor is the multiplier between similar shapes that describes how large one shape is compared to the other.

For which of the following sketches is the scale 1 : 50 appropriate?

Which is the most appropriate scale to draw an accurate scaled drawing of this plan of a house?

Using the scale 1 : 500 which are the correct dimensions of the scaled drawing of this field?

Using the scale 1 : 500 which are the correct dimensions of the real life field?

Variables are in proportion if they have a {{ }} multiplicative relationship.

If 1 cm = 20 km, how many kilometres are represented by 5 cm?

If 1 cm = 20 km, how many centimetres represent 180 km?

The scale on a map is 1 : 300 000.  The distance between two places on the map is 6 cm.  What is the distance in real life in kilometres?

The scale on a map is 1 : 400 000.  The distance between two places in real life is 34 km.  What is the distance between them on the map?

The scale of a model building is 1 : 200.  The height of a model block of flats is 5 cm.  How tall is the block of flats in real life?

This lesson will soon be taken down.

Checking and securing understanding of drawing accurate scaled diagrams

Lesson outcome