1. Do Now 1/4/12 Take out HW from last. Take out HW from last. Text p.152, #6-24 evens, 27, 31, & 32 Text p.152, #6-24 evens, 27, 31, & 32 Copy HW in your planner. Copy HW in your planner. Text p. 156, #14-38 evens, 43, 48, 49 Text p. 156, #14-38 evens, 43, 48, 49 In your journal, write 2 ratios that are equivalent to the given ratios. In your journal, write 2 ratios that are equivalent to the given ratios.

2. Write 2 fractions that are equivalent to the given fraction.

3. Homework Text p.152, #6-24 evens, 27, 31, & 32 6) 18 minutes / 1 pound 6) 18 minutes / 1 pound 8) the 64 ounce container 8) the 64 ounce container 10) $115 per feet² 10) $115 per feet² 12) 13 songs per CD 12) 13 songs per CD 14) 54 words per minute 14) 54 words per minute 16) $2.16 per pound 16) $2.16 per pound 18) 11 m per s 18) 11 m per s 20) 16,000 km per hour 20) 16,000 km per hour 22) 800 minutes for $62.99 is the better buy 22) 800 minutes for $62.99 is the better buy 24) $3.55, $3.70; $24.80/8 yds is the better buy 27) 289, 328, 609; France, Poland, Germany 31) D 32) 5 cuts at a rate of 36 seconds per cut

4. Objective SWBAT identify and write proportions SWBAT identify and write proportions

5. RATE – a fraction in which the numerator and the denominator have different units of measure. RATIO- uses division to compare two quantities of the SAME MEASURE.

6. Proportion- an equation that states that two ratios/rates are equivalent. Section 4.2 “Identifying and Writing Proportions” “a is to b as c is to d”

7. If two ratios are equivalent, they are said to be PROPORTIONAL or PROPORTIONATE. Determine whether the ratios are proportional Proportional because 2/3 is equal to 2/3. Not proportional because 1/3 is not equal to 3/10.

8. Determine whether the ratios are proportional Not proportional because 7/8 is not equal to 7/12. Not proportional because 9/10 is not equal to 9/20. Proportional because 2/7 is equal to 2/7. Proportional because 3/2 is equal to 3/2.

9. Solving a Proportion Solve a proportion by finding the value of the variable. One way to solve a proportion is to write both fractions with the same denominator (think of equivalent fractions).

10. Solve the Following Proportions: = = = = = = x = 9 x = 4 y = 30

11. Solving Equations with Rates A punch recipe calls for 4 cups of orange juice. The recipe will serve 8 people. You are making punch for a party of 32 people. How many cups of orange juice do you need? A punch recipe calls for 4 cups of orange juice. The recipe will serve 8 people. You are making punch for a party of 32 people. How many cups of orange juice do you need? =

12. NJASK7 Prep Text p. 156, #14-38 evens, 43, 48, 49 Text p. 156, #14-38 evens, 43, 48, 49 Homework