1. Quick Start Expectations 1.Fill in planner and HWRS HW: CS p. 19-38 #13-15, 17-18 2.On desk: textbook, calculator, journal, HWRS 3.Warm Up:

2. Journal: 12/10/14 Investigation 1.3: Time to Concentrate When you scale up, what must you consider? (Underline 2 or 3 key words in your question.) VOCABULARY: part-to-part ratio part-to-whole ratio

5. Mix A Using part (2)-to-part (3) 2:3 2/3.67 67% (concentrate-to-water) part (2) -to-whole (5) 2:5 2/5.40 40% (concentrate-to-whole mix) Mix B Using part (5)-to-part (9) 5:9 5/9.56 56% (concentrate-to-water) part (5) -to-whole (14) 5:14 5/14.36 36% (concentrate-to-whole mix) Mix C Using part (1)-to-part (2) 1/2 (concentrate-to-water) 1:2 50% part (1) -to-whole (3) 1/3 (concentrate-to-whole mix) 1:3 33% Mix D Using part (3)-to-part (5) 3/5 (concentrate-to-water) 3:5 60% part (3) -to-whole (8) 3/8 (concentrate-to-whole mix) 3:8 38% Review of part-to-part and part-to-whole:

7. Double check: 1 can concentrate = 12 oz. 3 cans water = 36 oz. Total = 48 oz. Part-to-whole Ratio 1 : 4 Scale up 12 : 48 48 oz. pitcher As a group answer questions A & Bp.13

8. Part-to-whole Ratio 1 : 5 ⅓ Scale up 12 : 64 oz. 64 oz. pitcher Double check: 1 can concentrate = 12 oz. 4⅓ cans water = 52oz. Total = 64 oz.

9. Part-to-whole Ratio 1 : 5 ⅓ Scale up 12 : 64 oz.

10. 1 Gallon = 128 oz. 1 : 3 (part to part) 1 : 4 (part to whole) x : 128 (scale factor of 32) 32 : 128 She needs 2 (16 oz.) cans! 1 : 4 (Part-to-whole) Scale up 16 : 64 64 oz. container

11. 15 oz. of lemonade concentrate 1 : 4 ⅓ (part to part) 1 : 5⅓ (part to whole) scale factor of 15 15 oz : 80 oz He needs a pitcher large enough to hold 80 oz.

12. 1 = cans of concentrate 4 = juice made in one recipe, in cans 128 = juice she wants to make (oz.) x = Ounces of concentrate she needs Think of these ratios as equivalent fractions. Hint?

13. HW: CS p. 19-38 #13-15, 17-18