+
The Unit Rate as the Scale Factor - 7.1 - Lesson 17

The Unit Rate as the Scale Factor - 7.1 - Lesson 17

Author: Todd Parks
Description:

Student Outcomes

  • Students recognize that the enlarged or reduced distances in a scale drawing are proportional to the corresponding distance in the original picture.
  • Students recognize the scale factor to be the constant of proportionality.
  • Given a picture or description of geometric figures, students make a scale drawing with a given scale factor.

(more)
See More

Try Our College Algebra Course. For FREE.

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

25 Sophia partners guarantee credit transfer.

221 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 20 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

The What and How

A scale factor is a number which scales, or multiplies, some quantity.

In the equation y = Cx, C is the scale factor for x. C is also the coefficient of x, and may be called the constant of proportionality of y to x.

For example, doubling distances corresponds to a scale factor of 2 for distance, while cutting a cake in half results in pieces with a scale factor of ½.

 

Scale Factor Power Point

Download the powerpoint using the circle button with an arrow inside of it that is up top to the right. You will then be able to play all of the animation in the slide show.
Be sure to also turn up the volume on your computer when you come to the question portion of the power point. Sounds will tell you whether you are choosing correctly or incorrectly.

Blank Printable Lesson

Full Screen

IXL - J.13 Scale Drawings and Scale Factors

http://www.ixl.com/math/grade-7/scale-drawings-and-scale-factors

This is the IXL 7th grade target J.13 Scale Drawings and Scale Factors.  Perfect practice for Lessons 17, 18, and 19 of the 7th grade common core.