Use concrete materials to model the addition and subtraction of two or more numbers, with and without trading, and record the method used

1. Now Add This! 34+11, 34+12
2. Now Add This! 19+20, 19+24
3. Now Add This! 52+20, 52+17
4. Now Add This! 33+19, 33+21
5. Add on tens: Add 10, 20 to 35
6. Add on tens: Add 10, 20 to 16.
7. Add on tens: Add 10, 20 to 36
8. The 1 Family - Add 1, add 11 to 35
9. The 1 Family - Add 1, add 11 to 27
10. The 1 Family - Add 1, add 11 to 49
11. The 1 Family - Add 1, add 11 to 57
12. The 1 Family - Add 1, add 11 to 83
13. The Nine Family: 53 + 9, + 19 + 29
14. The Nine Family: 47 + 9, + 19 + 29
15. The Nine Family: 38 + 9, + 19 + 29
16. The Nine Family: 55 + 9, + 19, + 29
17. The Nine Family: 42 + 9, + 19, + 29
18. 100 grid: 41 take away 6
19. 100 grid: 53 subtract 8
20. 100 grid: 32 take away 5
21. 100 grid: 76 take away 7
22. 100 grid: 54 take away 8
23. 100 grid: 64 take away 9
24. 100 grid: 84 take away 8
25. 100 grid: 46 take away 9
26. 100 grid: 23 take away 7
27. 100 grid: 71 take away 8
28. 100 grid: 34 take away 6
29. 100 grid: 77 take away 9
30. Subtract from 30: 30 - 20, 7 & 12
31. Subtract from 30: 30 - 15, 10 & 6
32. Subtract from 30: 30 - 11, 5 & 21
33. Subtract from 30: 30 - 8, 30 & 14
34. Subtract from 30: 30 - 17, 30 & 5
35. The 9 family: Take 9, 19 & 29 from 57
36. The 9 family: Take 9, 19 & 29 from 65
37. The 9 family: Take 9, 19 & 29 from 72
38. The 9 family: Take 9, 19 & 29 from 44
39. The 9 family: Take 9, 19 & 29 from 36
40. Eleven family: Subtract 1, 11 & 21 from 5
41. Eleven family: Subtract 1, 11 & 41 from 85
42. Eleven family: Subtract 1, 11 & 31 from 77
43. Eleven family: Subtract 1, 11 & 21 from 68
44. Eleven family: Subtract 1, 11 & 71 from 96
45. Subtract 2, 12 from 100
46. Subtract 3, 13 from 100
47. Subtract 5, 15 from 100
48. Subtract 7, 17 from 100
49. Subtract 8, 18 from 100
50. Subtract 4, 14 from 100
51. The Chicken Story: forty + thirty
52. The Chicken Story: seventy-seven + twelve
53. The Chicken Story: sixty + thirty
54. The Chicken Story: seventy-nine - seventy-three
55. The Chicken Story: fifty + twenty
56. The Chicken Story: thirty-nine + twelve
57. The Chicken Story: thirty-six + fourteen
58. The Chicken Story: forty-one + seventeen
59. The Chicken Story: thirteen + nineteen
60. The Chicken Story: twenty-four + thirty-two