1TTO:Scale

• Wiskunde
• Middelbare school
• havo, vwo
• Leerjaar 1

Topic: Scale

Objectives:

1. Understand what scale is.

2. Can calculate scale

What to do today:

1. Recall

2. Question about homework

3. Introduction of scale

4. Lesson UP

5. Do homework

Enlarging in two dimensions

What is the scale factor here?

scale - schaal

measurements like length, width and height - afmetingen, zoals 

                                                                                                 lengte, breedte en hoogte

Scale

A scale of 1 : 200 means the measurements of the real object are 200 times as large as those of the model.

Vital question for 'scale':

What does 1 cm in the drawing represent in reality?!

This drawing could be a map of a town, 

but also the drawing of an animal, or whatever.   

Let's look at an example! Video

So the scale is     4 : 1  ??!

Shouldn't this result be:

1 : 4 ?

Homework time

+ Do theory B Scale with questions 7, 8, 9