1. OPENER Write a proportion involving the two variables, then solve for the unknown value. 1. 3. 2. 4. Time (minutes) # of pencils produced 1242 1863 40? Time (minutes) Distanced Traveled (miles) 225 562.5 ?112.5 Time (minutes) # of Jumps 6? 1463 32144 # of Hooks# of Sinkers 85 40? 7245

2. OPENER - ANSWERS Write a proportion involving the two variables, then solve for the unknown value. 1. 3. 2. 4. Time (minutes) # of pencils produced 1242 1863 40 140 Time (minutes) Distanced Traveled (miles) 225 562.5 9 112.5 Time (minutes) # of Jumps 6 27 1463 32144 # of Hooks# of Sinkers 85 40 25 7245

3. Using Constant of Proportionality to Solve Proportions CH 2.4

4. PAGE 100 READ FOR ME PLEASE… 2. How can you determine the constant of proportionality using the values in the table? Time (minutes) Distance traveled by snail (cm) 211 527.5 1266 1582.5 Set up one rate from one value from the time column, and a corresponding value from the distance traveled column. Next, define the quantities that are changing and set up a proportion to find the constant of proportionality. 3. What is the constant of proportionality? 4. Set up a proportion when the snail travels 2 minutes. Work on #5-7 in your groups…5 minutes

5. PAGE 102 READ FOR ME PLEASE… Read #1 for me please… 1.a. The table shown is a survey of sixth graders who prefer to ride a skateboard or a bicycle. Is the relationship proportional? SkateboardBicycle 24 3032 4060 Work on #1b-e in your groups until the end of class. If you should finish work on your homework.