Literature Connection:
poem "Smart" by Shel Siverstein from Where the Sidewalk Ends
Mathematical strand:
Number
Topic:
Ratios, rates and unit rates
Grade level:
68
Lesson Created by:
Marie Green, Susan B. Anthony Middle School, Manhattan, KS.
Lesson Description:
Materials
 The poem "Smart" from the Book  Where the Sidewalk Ends, by Shel Silverstein, 3 x 5 note cards
1. Launching the lesson (engage):
 Read the poem "Smart"
 Discuss why the boy was confused. He traded his dollar for 2 quarters because 2>1. Why is this a problem?
2. Developing the lesson
 Have students fill out the note card. On it two numbers have been written. The student is to show a relationship between the two numbers (Ex. 5,50). A possible answer is 5 dimes to 50 cents. Have the students share the relationships they have written.
 Now introduce the terms: rateratio of two measurements with different units ratio comparison of two numbers by division
 Each student is to tell whether he has written a rate or a ratio.
 On the back of the note card each student is to write his own set of numbers and share a relationship that he has made.
 Discuss the studentmade relationships.
 Once again discuss the relationships as either a rate or a ratio
 Introduce the idea of unit rate. Unit rate  a rate with a denominator of 1
 Have each student change the numbers on their card to a unit rate.
3. Closure/Discussion/Elaboration
 Pose the question: What kind of unit rate would the smartest son need to make sure he wasn't being cheated? (1: 1)
 Why do we simplify ratios? (To have simpler numbers to work with)
 Students are to complete the worksheet E8 on ratio and unit rate.
