This short activity is a great way of introducing the concept of scale factor and area factor. Students often find this concept difficulty to understand, but this activity is quick way of giving them a head start.
Working individually, or as a class, students discover for themselves the relationship between scale factor and area factor. They have a box to fill out at the end of the activity to explain the result in their own words.
The zip file contains a pdf of the activity, an accompanying PowerPoint and the answers.