Course: H.S. Quantitative Reasoning

 

QR.RP.5

Distinguish between proportional and non-proportional situations, and, when appropriate, apply proportional reasoning, such as when solving for an unknown quantity in proportional situations; solving real-life problems requiring conversion of units using dimensional analysis; or applying scale factors to perform indirect measurements (e.g., maps, blueprints, concentrations, dosages, and densities). Recognize when proportional techniques do not apply.

I Can Statements Academic Vocabulary

*I can determine if a situation is proportional or non-proportional.

*I can apply proportional reasoning when appropriate and determine when proportional techniques do not apply.

*I can solve real-world problems requiring conversion of units using dimensional analysis.

*I can apply scale factors to perform indirect measurements.

Proportional situations
Non-proportional situations
Proportional reasoning
Dimensional analysis
Scale factor
Indirect measurement

Looking Back Looking Ahead

*Convert between measurement systems given conversion factors, and use these conversions in solving real-world problems. (MA.6.GM.1)

*Decide whether two quantities are in a proportional relationship. (MA.7.AF.6)

*Identify real-world and other mathematical situations that involve proportional relationships. (MA.7.AF.9)

*Create a scale drawing by using proportional reasoning. (MA.7.GM.3)

*This course is a 4th year course in the Indiana sequence. The concepts and skills within the course extend to multiple post-secondary pathways and applications.

Clarifying Examples and Digital Resources
Click here for clarifying examples and digital resources aligned to Indiana standards. These are intended to expand each standard to support instruction in the classroom as evidenced by the Eight Mathematics Teaching Practices put forth by the National Council of Teachers of Mathematics (NCTM).