Scale Drawings

Welcome back from winter break! This week we will be using proportions to solve problems involving scale drawings. Here are some of the vocabulary words we will use:

*Scale Drawing*: A drawing that is proportional to real life. For example, a drawing of a house would have the exact same shape as the real house, but it would be smaller.

*Scale*: The ratio of the length of a drawing to the length in real life. For example, on the drawing of the house, one inch might represent 2 feet on the real house. Often the scale would be written 1 in: 2 ft.

Also, on a map a scale could be 2 inches: 50 miles. This means that every two inches on the map represents 50 miles in real life.

*Scale Factor:* The ration of the length of the drawing to the length in real life when both of the measurement have the same units. For example, if the scale is 1 in:2 ft, the scale factor would be 1:24 because 2 feet equals 24 inches.

Here are some resources that we will use in class:

**Homework/Classwork:**

Ratios/Proportions

Solving Proportions

Scale Drawing Problems

**Videos:**

Proportions and scale drawings

Scale Drawings