Standard Unwrapping

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Vocabulary
quantityfractionvaluecomputation
Skills
  • determine (whether a quantity is increased when multiplied by a fraction) #dok2
  • determine (whether a quantity is decreased when multiplied by a fraction) #dok2
  • analyze (effects of multiplying by fractions greater than one) #dok2
  • analyze (effects of multiplying by fractions less than one) #dok2
  • justify (the change in value when multiplying by a fraction, with or without computation) #dok3
Learning Targets
  • I can determine whether a quantity increases when multiplied by a fraction greater than one. #dok2
  • I can determine whether a quantity decreases when multiplied by a fraction less than one. #dok2
  • I can use computation to find out if multiplying by a fraction increases or decreases a given value. #dok2
  • I can explain and justify how multiplying by different fractions changes the value of a quantity. #dok3
Big Ideas
  • Multiplying a quantity by a fraction changes its value depending on whether the fraction is greater than or less than one.
  • Understanding the effect of multiplying by a fraction is important for reasoning about changes in quantities in mathematical and real-world contexts.
Essential Questions
  • How does multiplying a quantity by a fraction affect its value?
  • When will multiplying by a fraction increase a quantity? When will it decrease it?
  • Why does multiplying by a fraction less than one make a quantity smaller?
  • How can you justify your answer without computation?
  • Can you think of real-world situations where multiplying by a fraction changes the amount of something?