Classroom Resource

Cupcake Mix Meets Fractions

Subject Area

Mathematics

Grade(s)

5

Overview

In this video segment from Cyberchase, Bianca helps a friend get ready for a school bake sale. They are making cupcakes but when they realize that the recipe only makes a dozen cupcakes, decide it is not enough. They want to make double that amount, so they decide to double the recipe, which includes doubling a fraction that results in an improper fraction.

Mathematics (2019) Grade(s): 5

MA19.5.10

Add and subtract fractions and mixed numbers with unlike denominators, using fraction equivalence to calculate a sum or difference of fractions or mixed numbers with like denominators.

Unpacked Content

UP:MA19.5.10

Vocabulary

  • Fraction
  • Denominator
  • Numerator
  • Visual Model
  • Sum
  • Difference
  • Equivalence
  • Unlike denominators
  • Unlike units

Knowledge

Students know:
  • Strategies to determine if two given fractions are equivalent.
  • How to use a visual model to illustrate fraction equivalency.
  • Contextual situations for addition and subtraction.

Skills

Students are able to:
  • Use fraction equivalence to add and subtract fractions and mixed numbers with unlike denominators.

Understanding

Students understand that:
Addition and subtraction of fractions and mixed numbers with unlike units,
  • Require strategies to find equivalent fractions in a common unit, and the sum or difference will be expressed in the common unit.
  • Can be assessed for reasonableness of answers using estimation strategies.
Link to Resource
https://aptv.pbslearningmedia.org/resource/vtl07.math.number.fra.cupcakemix/cup…

CR Resource Type

Audio/Video

Resource Provider

PBS
Accessibility
License

License Type

Custom

Custom License Type (URL)

https://www.pbslearningmedia.org/help/terms-of-use/#restrictions

Comments or Notes

2019 ALCOS

11. Solve word problems involving division of whole numbers leading to answers in the form of fractions or mixed numbers.
a. Model and interpret a fraction as division of the numerator by the denominator (a/b= a ÷ b)
b. Use visual fraction models, drawings, or equations to represent word problems involving division of whole numbers leading to answers in the form of fractions or mixed numbers

Approved Date

mfrye
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