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Similarity

Author: Angela Edwards

This Discovery Education video begins with a quick review of ratios. It then introduces the concept of similarity in shape and size, using triangles, polygons, and solids. It visits the topics of perimeter, area, and volume. It also addresses some applications for similarity.

This video uses similarity to give a more in depth look at architecture and creating blueprints.

Name _______________


Scale Drawing
Geometry


 For this project, each student will work on their own, no partners or groups.  This project is worth 50 points.  A grading rubric is attached to this paper.   


 You are going to make a scale drawing of your bedroom.  You will measure the dimensions of your bedroom in your house, including doors, closets, and windows.  Also measure major items, such as furniture, in the room.  Using a scale factor of your choice, you will draw an aerial view sketch of your room (like blueprints).  These pictures are going up in the classroom, so you may want to color them or make them look nice. 

 Graph paper can be helpful in the making of the drawings, but your final picture may not be on graph paper.  If you do your picture on graph paper, you must trace it on to plain white paper.  Your picture must include a title, your drawing, and the scale factor you used. 

 On a separate sheet of paper, you must include all of the work you did to make your drawing.  This paper must show the real dimensions of everything you have drawn, the scale factor you chose, and an explanation of how you found the scaled dimensions for each object. 

 This project will be started in class and completed at home.  It will be due on Monday May 16th.  This means that it should be complete and ready to hand in before you enter the classroom!  5 points will be taken off for each day it is late so please be on time.

 

 

 

Grading Rubric
Scale Drawing
Geometry


   
                                                                                                                             Points Possible        Points Earned
Scale Drawing Picture:
Bedroom only - in proportion                                                                                         10/30
Bedroom with door, closet, windows, in proportion                                                       15/30
Bedroom as above with 1 object, few errors, neat                                                         20/30
Bedroom as above with 2 objects, no errors, very neat                                                 25/30
Bedroom as above with 3 objects, no errors, extremely neat                                        28/30
Bedroom as above with 4 or more object, no errors, very neat, and colored                30/30


The separate paper:


All work shown                                                                                                               10/20
All work is correct                                                                                                           15/20
All work is explained                                                                                                       20/20

                                                                                                                                    ________

Total                                                                                                                                 50 

 

Graph paper blueprint

Example of a rough draft of a blue print using graph paper

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Blue pring in color

Example of a final blueprint in color

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Bluepring with construction paper

Example of a final blueprint using construction paper for the elements in the room

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Bluepring using Floor Planner website

Example of a blue print using www.floorplanner.com

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calculations

Example of calculations page

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