MR13

27/10/2008 BC Math 7e Big Idea: Many things in our world are mathematically similar and we can use this to understand and describe the world around us. Essential question: How can I make a drawn figure larger?


 * Mathematical Reflections 1 (page 13)

1. supose you used your two-band stretcher to enlarge the rectangle below.

A. How would the side lenghts of the enlarged rectangle compare to the side lenghts of the original rectangle? The side lengths of the enlarged rectangle will be doubled compare to the original shape side lengths.

B. How would the perimeter of the enlarged rectangle compare to the perimeterof the original rectangle? The perimeter of the enlarged rectangle will be doubled compare to the original rectangles perimeter.

C. How would the area of the enlarged rectangle compare to the area of the original rectangle? The area of the enlarged rectangle quatripled compare to the original shape.

2. How does the location of the anchor point affect the image drawn with a stretcher? The anchor point affect the image by how big it's drawn and location you drawn the figure.

Summary: In this investigation, I learnt how to enlarge figures with a rubber-band. Also, I learnt what 'corresponding' meant and how and when to use it.**