This lesson should be taught after students have a conceptual understanding of dividing fractions and are familiar with how to find reciprocals.
Teacher will read a math based story "Louie Lewis: The Case of the Flipping Fractions" from Funny and Fabulous Fraction Stories pg. 54-55 with students to teach how students can use reciprocals to divide fractions.
2 Direct Instruction
Use https://www.khanacademy.org/math/arithmetic/fractions/div-fractions-frac... to reinforce concepts touched on the in hook math story of using reciprocals to divide fractions.
3 Guided Practice
Have students try the problems from the story and then review answers as a class showing examples on whiteboard as needed.
4 Independent Practice
Setup your class online so students can log into complete assignments and tasks you set for them. Use the online tool to setup the fraction division task for your students to complete.
Give students an exit slip to assess their understanding of how to use reciprocals to divide fractions.
Key Standards Supported
Number And Operations—Fractions
Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.
Understand a fraction as a number on the number line; represent fractions on a number line diagram.
Represent a fraction 1/b on a number line diagram by defining the interval from 0 to 1 as the whole and partitioning it into b equal parts. Recognize that each part has size 1/b and that the endpoint of the part based at 0 locates the number 1/b on the number line.
Represent a fraction a/b on a number line diagram by marking off a lengths 1/b from 0. Recognize that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line.
Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.
Understand two fractions as equivalent (equal) if they are the same size, or the same point on a number line.
Recognize and generate simple equivalent fractions, e.g., 1/2 = 2/4, 4/6 = 2/3). Explain why the fractions are equivalent, e.g., by using a visual fraction model.
Express whole numbers as fractions, and recognize fractions that are equivalent to whole numbers. Examples: Express 3 in the form 3 = 3/1; recognize that 6/1 = 6; locate 4/4 and 1 at the same point of a number line diagram.
Compare two fractions with the same numerator or the same denominator by reasoning about their size. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model.