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# Skill 1.3

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• Did we change the area at all as we cut up the square?\n
• Did we change the area at all as we cut up the square?\n
• Did we change the area at all as we cut up the square?\n
• Did we change the area at all as we cut up the square?\n
• Did we change the area at all as we cut up the square?\n
• Did we change the area at all as we cut up the square?\n
• Did we change the area at all as we cut up the square?\n
• Did we change the area at all as we cut up the square?\n
• Did we change the area at all as we cut up the square?\n
• How do we turn 2/9 into /36?\n
• How do we turn 2/9 into /36?\n
• How do we turn 2/9 into /36?\n
• How do we turn 2/9 into /36?\n
• How do we turn 2/9 into /36?\n
• How do we turn 2/9 into /36?\n
• How do we turn 2/9 into /36?\n
• How do we turn 2/9 into /36?\n
• How do we turn 2/9 into /36?\n
• How do we turn 2/9 into /36?\n
• How do we turn 2/9 into /36?\n
• How do we turn 2/9 into /36?\n
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• Discuss with a friend or neighbor or the inside of your own head what fraction is shaded here. (Lots of kids suggest 1/9.)\n
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• Discuss with a friend or neighbor or the inside of your own head what fraction is shaded here.\n
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• Can I divide anything out of the top and bottom?\n
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• ### Skill 1.3

1. 1. Skill 1.3 - Add and Subtract Fractions 1/19/2011 Do Now1) 7 - (-7) You only have 3 minutes so get started2) (4)(7)3) 40 / -2
2. 2. Skill 1.3 - Add and Subtract Fractions 1/19/2011 Do Now1) 7 - (-7) You only have 3 minutes so get started2) (4)(7)3) 40 / -2
3. 3. Mike
4. 4. MikeChip
5. 5. MikeChip Chancz
6. 6. Mike DewayneChip Chancz
7. 7. Mike DewayneChip Chancz
8. 8. Mike DewayneChip Chancz
9. 9. Mike Dewayne RavenChip Chancz
10. 10. Mike Dewayne RavenChip Chancz
11. 11. Mike Dewayne RavenChip Chancz
12. 12. How do we get Olivia a fair amount?
13. 13. How do we get Olivia a fair amount? Lets use Math!
14. 14. 14
15. 15. 15
16. 16. 120
17. 17. ==
18. 18. =14 =
19. 19. =1 14 5 =
20. 20. - = -1 14 5 =
21. 21. - = -1 1 14 5 = 20
22. 22. Fractions
23. 23. Fractions
24. 24. Fractions
25. 25. Fractions
26. 26. Fractions 1 4 €
27. 27. Fractions 1 4 €
28. 28. Fractions 1 4 = 4 16 €€
29. 29. Fractions 1 4 = 4 16 €€
30. 30. Fractions 1 4 = = 4 16 64 €€ €
31. 31. Fractions 1 4 16 = = 4 16 64 € €€ €
32. 32. Fractions
33. 33. Fractions
34. 34. Fractions
35. 35. Fractions 1 9 €
36. 36. Fractions
37. 37. Fractions 2 9 €
38. 38. Fractions 2 9 €
39. 39. Fractions 2 9 €
40. 40. Fractions 2 9 2 1 + = 9 36 € €
41. 41. Fractions 2 9 2 1 + = 9 36 € 8 1 + = 36 36 €
42. 42. Fractions 2 9 2 1 + = 9 36 € 8 1 9 + = 36 36 36 €
43. 43. Fractions 2 9 2 1 + = 9 36 € 8 1 9 1 + = = 36 36 36 4 €
44. 44. Fractions
45. 45. Fractions
46. 46. Fractions
47. 47. Fractions
48. 48. Fractions
49. 49. What fraction is shaded here?
50. 50. What fraction is shaded here?
51. 51. Here, I’ll make it easier
52. 52. Now, what fraction is shaded here? 1 8 €
53. 53. Now, what fraction is shaded here? 1 8 €
54. 54. Is that easier? 1 8 €
55. 55. Now, let us solve a math problem 1 8 €
56. 56. Now, let us solve a math problem 1 8 €
57. 57. Now, let us solve a math problem 1 8 €
58. 58. Now, let us solve a math problem 1 3 + = 8 16 €€
59. 59. Now, let us solve a math problem 1 3 + = 8 16 2 3 + = 16 16 €€ €
60. 60. Now, let us solve a math problem 1 3 + = 8 16 2 3 5 + = 16 16 16 €€ € €
61. 61. More Fractions
62. 62. More Fractions
63. 63. More Fractions
64. 64. More Fractions
65. 65. Fractions - Same Denominator
66. 66. Fractions - Same Denominator 1. 4 2 + = 7 7 €
67. 67. Fractions - Same Denominator 1. 4 2 6 + = 7 7 7 € €
68. 68. Fractions - Same Denominator 1. 4 2 6 + = 7 7 7 4 2 2. + = € 9 9 € €
69. 69. Fractions - Same Denominator 1. 4 2 6 + = 7 7 7 4 2 2. + = € 9 9 € 7 5 3. + = € 10 10 €
70. 70. Fractions - Same Denominator 1. 4 2 6 + = 7 7 7 4 2 2. + = € 9 9 € 7 5 3. + = € 10 10 7 5 4. − = € 10 10
71. 71. Fractions - Same Denominator 1. 4 2 6 + = 7 7 7 4 2 2. + = € 9 9 € 7 5 3. + = € 10 10 7 5 4. − = € 10 10
72. 72. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 2. + = € 9 9 € € 7 5 3. + = € 10 10 7 5 4. − = € 10 10
73. 73. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 2 12 2. + = 6. − = € 9 9 € € 13 13 7 5 3. + = € 10 10 € 7 5 4. − = € 10 10
74. 74. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 2 12 2. + = 6. − = € 9 9 € € 13 13 7 5 14 4 3. + = 7. − = € 10 10 € 50 50 7 5 4. − = € 10 10 €
75. 75. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 2 12 2. + = 6. − = € 9 9 € € 13 13 7 5 14 4 3. + = 7. − = € 10 10 € 50 50 7 5 12 13 4. − = 8. + = € 10 10 € 25 25
76. 76. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 12 2. + = 6. − = € 9 9 € 9 € 13 13 7 5 14 4 3. + = 7. − = € 10 10 € € 50 50 7 5 12 13 4. − = 8. + = € 10 10 € 25 25
77. 77. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13 13 7 5 14 4 3. + = 7. − = € 10 10 € € € 50 50 7 5 12 13 4. − = 8. + = € 10 10 € 25 25
78. 78. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13 13 7 5 12 14 4 3. + = 7. − = € 10 10 10 € € € 50 50 7 5 12 13 4. − = 8. + = € 10 10 € € 25 25
79. 79. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13 13 7 5 12 6 14 4 3. + = 7. − = € 10 10 10 € € 5€ 50 50 7 5 12 13 4. − = 8. + = € 10 10 € € € 25 25
80. 80. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13 13 7 5 12 6 14 4 3. + = 7. − = € 10 10 10 € € 5€ 50 50 7 5 2 12 13 4. − = 8. + = € 10 10 10 € € € 25 25
81. 81. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13 13 7 5 12 6 14 4 3. + = 7. − = € 10 10 10 € € 5€ 50 50 7 5 2 1 12 13 4. − = 8. + = € 10 10 10 € € 5€ 25 25
82. 82. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 7 5 12 6 14 4 3. + = 7. − = € 10 10 10 € € 5€ 50 50 7 5 2 1 12 13 4. − = 8. + = € 10 10 10 € € 5€ 25 25
83. 83. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 −10 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 13 7 5 12 6 14 4 3. + = 7. − = € 10 10 10 € € 5€ 50 50 € 7 5 2 1 12 13 4. − = 8. + = € 10 10 10 € € 5€ 25 25
84. 84. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 −10 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 13 7 5 12 6 14 4 10 3. + = 7. − = € 10 10 10 € € 5€ 50 50 € 50 7 5 2 1 12 13 4. − = 8. + = € 10 10 10 € € 5€ 25 25 €
85. 85. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 −10 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 13 7 5 12 6 14 4 10 1 3. + = 7. − = € 10 10 10 € € 5€ 50 50 € 50 5 7 5 2 1 12 13 4. − = 8. + = € 10 10 10 € € 5€ 25 25 € €
86. 86. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 −10 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 13 7 5 12 6 14 4 10 1 3. + = 7. − = € 10 10 10 € € 5€ 50 50 € 50 5 7 5 2 1 12 13 25 4. − = 8. + = € 10 10 10 € € 5€ 25 25 € 25 €
87. 87. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 −10 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 13 7 5 12 6 14 4 10 1 3. + = 7. − = € 10 10 10 € € 5€ 50 50 € 50 5 7 5 2 1 12 13 25 4. − = 8. + = 1 € 10 10 10 € € 5€ 25 25 € 25 €
88. 88. Fractions - Different Denominators 1 2 - = 7 9
89. 89. Fractions - Different Denominators 1 x9 2 - = 7 x9 9
90. 90. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7
91. 91. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7 9 - 63
92. 92. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7 9 14 - 63 63
93. 93. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7 9 14 - = 63 63
94. 94. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7 9 14 -5 - = 63 63 63
95. 95. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7 9 14 -5 - = 63 63 63
96. 96. Fractions - Different Denominators 7 2 - = 9 6
97. 97. Fractions - Different Denominators 7 x2 2 - = 9 x2 6
98. 98. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3
99. 99. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 - 18
100. 100. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 6 - 18 18
101. 101. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 6 8 - = 18 18 18
102. 102. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 6 8 ÷2 - = 18 18 18 ÷ 2
103. 103. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 6 8 ÷2 4 - = = 18 18 18 ÷ 2 9
104. 104. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 6 8 ÷2 4 - = = 18 18 18 ÷ 2 9
105. 105. Independent Work Time
106. 106. Independent Work Time