Draw It to Scale: IM 7.1.13
[url=https://im.kendallhunt.com/MS/teachers/2/1/13/preparation.html]“Draw It to Scale”[/url] from IM Grade 7 by [url=https://www.geogebra.org/m/gus8ffvr]Open Up Resources[/url] and Illustrative Mathematics. Licensed under the [url=https://creativecommons.org/licenses/by/4.0/]Creative Commons Attribution 4.0 license[/url].
Table of Contents
- Lesson 7.1.13
- IM 7.1.13 Lesson: Draw It to Scale
- Practice 7.1.13
IM 7.1.13 Lesson: Draw It to Scale
Which measurements would you need in order to draw a scale floor plan of your classroom? List which parts of the classroom you would measure and include in the drawing. Be as specific as possible.
Make a rough sketch of a floor plan of the classroom. Include parts of the room that the class has decided to include or that you would like to include. Accuracy is not important, but be careful not to omit important features like a door.
Trade sketches with a partner and check each other’s work. Specifically, check if any parts are missing or incorrectly placed and write down your notes here:
After you have returned their work and revised your sketch as needed, discuss with the partner or with a group and agree on answers to the following questions. [br][br]Which classroom features must be measured and which are optional?
Which units should be used?
How will you record and organize the measurements (on the sketch, in a list, in a table, etc.)?
How will the measuring and recording work be shared? Agree on the role each group member will play.
Gather your tools, take (or estimate) your measurements, and record them as planned. You can use the table below if you choose to. Be sure to double-check your measurements and make your own copy of all the measurements.
Now, determine an appropriate scale for your drawing based on your measurements:
Use the measurements your group has taken to draw a scale floor plan of the classroom. Show the scale of your drawing, label key parts of your drawing with their actual measurements, show your thinking so it can be followed by others.
If the flooring material in your classroom is to be replaced with 10-inch by 10-inch tiles, how many tiles would it take to cover the entire room? Use your scale drawing to approximate the number of tiles needed.
How would using 20-inch by 20-inch tiles (instead of 10-inch by 10-inch tiles) change the number of tiles needed? Explain your reasoning.
Trade floor plans with other students. Discuss your observations and thinking. Based on your discussions, record ideas for how your floor plan could be improved.