Literature Connection: poem "Smart" by Shel Siverstein from Where the Sidewalk Ends Mathematical strand: Number Topic: Ratios, rates and unit rates Grade level: 6-8 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: rate-ratio 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 student-made 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 E-8 on ratio and unit rate.