Developing a Sense of Scale

This lesson unit is intended to help you assess whether students recognize relationships of direct proportion and how well they solve problems that involve proportional reasoning. In particular, it is intended to help you identify those students who use inappropriate additive strategies in scaling problems, which have a multiplicative structure, rely on piecemeal and inefficient strategies such as doubling, halving, and decomposition, and have not developed a single multiplier strategy for solving proportionality problems and see multiplication as making numbers bigger, and division as making numbers smaller.
Resource ID#: 32528 Type: Lesson Plan
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Direct Link: http://map.mathshell.org/materials/lessons.php?taskid=456#task456

General Information

Subject(s): Mathematics
Grade Level(s): 7
Intended Audience: Educators educators
Suggested Technology: LCD Projector, Overhead Projector
Instructional Time: 1 Hour(s) 30 Minute(s)
Keywords: scale, additive strategy, multiplication, doubling, halving, decomposition, division
Instructional Component Type(s): Lesson Plan
Resource Collection: General Collection

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