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# Standard #: MA.7.GR.1.5

This document was generated on CPALMS - www.cpalms.org

Solve mathematical and real-world problems involving dimensions and areas of geometric figures, including scale drawings and scale factors.

### Clarifications

Clarification 1: Instruction focuses on seeing the scale factor as a constant of proportionality between corresponding lengths in the scale drawing and the original object.

Clarification 2: Instruction includes the understanding that if the scaling factor is k, then the constant of proportionality between corresponding areas is k² .

Clarification 3: Problem types include finding the scale factor given a set of dimensions as well as finding dimensions when given a scale factor.

### General Information

Subject Area: Mathematics (B.E.S.T.)
Strand: Geometric Reasoning
Status: State Board Approved

#### Related Courses

 Course Number1111 Course Title222 1205040: M/J Grade 7 Mathematics (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current)) 1205050: M/J Accelerated Mathematics Grade 7 (Specifically in versions: 2014 - 2015, 2015 - 2020, 2020 - 2022, 2022 and beyond (current)) 1204000: M/J Foundational Skills in Mathematics 6-8 (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current)) 7812020: Access M/J Grade 7 Mathematics (Specifically in versions: 2014 - 2015, 2015 - 2018, 2018 - 2019, 2019 - 2022, 2022 and beyond (current))

#### Related Access Points

 Access Point Number Access Point Title MA.7.GR.1.AP.5 Use a scale factor to draw a scale drawing of a real-world two-dimensional polygon on graph paper.

#### Formative Assessments

 Name Description Space Station Scale Students are asked to find the ratio of the area of an object in a scale drawing to its actual area and then relate this ratio to the scale factor in the drawing. Flying Scale Students are asked to find the length and area of an object when given a scale drawing of the object.

#### Original Student Tutorial

 Name Description Scale Round Up Learn to use architectural scale drawings to build a new horse arena and solve problems involving scale drawings in this interactive tutorial. By the end, you should be able to calculate actual lengths using a scale and proportions.

#### Perspectives Video: Teaching Idea

 Name Description KROS Pacific Ocean Kayak Journey: Kites, Geometry, and Vectors Set sail with this math teacher as he explains how kites were used for lessons in the classroom. Related Resources: KROS Pacific Ocean Kayak Journey: GPS Data Set [.XLSX] KROS Pacific Ocean Kayak Journey: Path Visualization for Google Earth [.KML] Download the CPALMS Perspectives video student note taking guide.

#### Original Student Tutorial

 Name Description Scale Round Up: Learn to use architectural scale drawings to build a new horse arena and solve problems involving scale drawings in this interactive tutorial. By the end, you should be able to calculate actual lengths using a scale and proportions.

Printed On:12/1/2022 10:24:20 AM
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