1. How to Scale Model

2. What is a AU?? Astronomical Unit-
a unit of measurement equal to million kilometers, the mean distance from the center of the earth to the center of the sun.

3. Practice/Example Problem
Scale factor-
6m=______mi
Actual-
12m=4mi

4. Step 1:
1st, you are going to put you two scale modeling numbers as a proportion.
If there is a blank, fill in the spot as x.

5. Step 2:
Put equals (=) and the actual sizes over each other.

6. Step 3:
Cross Multiply and solve for x. (as shown on the side.