Enlarging A Picture

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After studying similarity for several weeks the students were each given a small 1inch by 1 inch square of a cartoon.  Each student was also given a 5 inch by 5 inch piece of paper.  After griding the two squares into 9 boxes the students then copied each of the nine sections of the small print onto the larger piece of paper.

 
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Each piece the students received also was labeled with a coordinate such as (1,1) to (10,10).  This number corresponded to the position of the student's puzzle piece in the complete puzzle.
      

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As students completed the enlargement of their picture they carried it to the side of the room where several students were given the task of re-assembling the picture on the wall.  There was a lot of interest to see what the picture would make.  As the puzzle was -re-assembled the students saw there picture emerge.  Each of my three classes had different pictures. 

     
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At the conclusion of the enlarging process the students could see that the area of the picture had grown by 25 times when the dimensions of the picture has each been increased by a factor of 5.  This was a second project the students had completed using similarity.

 

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