Lesson: Multiply Fractions
Lesson Objective
Lesson Plan
Standard 

6NSO.E18 – Estimate results of computation with whole numbers and with positive fractions, mixed numbers, decimals and percentages. Determine reasonableness of estimates.


Aim/Objective: 
Key Points 
· Multiply fractions 
· Procedural: S.O.S · when we multiply fractions – · shape the fractions, · operate by multiplying straight across the top and straight across the bottom and · simplify 
Assessment: 

x =
A trail at Chinquapin Mountain is 3 miles long. If Ronnie hikes the trail 8 times a month, how many miles will he hike?
A. 6 miles B. 11 miles C. 24 miles D. 25 miles
x =


Lesson 

Opening: · When we think of multiplying we generally think of groups of – today we are going start by seeing what multiplying fractions looks like and then moving into multiplying fractions (mixed numbers, improper numbers) without a model Intro: · Show an area model for the problem:3 x 4 as being the same thing as having three rows of 4 · Discuss that we can use the same model for fractions. · First we draw the second fraction (model with example ¾ x 2/3). In this example we start by drawing 2/3. Next we will draw a picture of ¾ on top of the 2/3 – for this draw four rows and color in three of them. Last we will see where the fractions overlap and write a fraction based on our new picture. · Model through several more examples of drawing out the model for different multiplication of fraction problems · For each model have the second fraction already presented and students draw the first fraction on top of it. · Allow students to make predictions of the algorithm for multiplying fractions based on the models. · Explain to students the algorithm for multiplying fractions – S.O.S – Shape, Operate, Simplify · Shape – make the fraction look like a fraction in shape – with a single numerator and single denominator (change mixed numbers to improper fractions, change whole numbers to improper fractions) · Operate – multiply straight across the top and straight across the bottom · Simplify – simplify the fraction – change any improper fraction to a mixed number – write the number in its most simplest form.
Practice: · Students practice multiplying fractions using algorithm on worksheet · Students practice applying fraction computation to word problems
Closing: · Review the steps for the algorithm · Discuss ways/situations/contexts for word problems that want us to multiply · Exit Ticket 
Lesson Resources
CW Multiply Fractions and Mixed Numbers Classwork 
2,055

HW Unit 5 Multiply Fractions 
1,451

U6 L5 Smooth Operator multiply fractions 
1,653

U6.L5.Smooth.Operator.multiply.fractions.docx 
758

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