Use concrete materials and a number line to model and determine the difference between two numbers

1. Spot the difference between 3 and 5
2. Spot the difference between 4 and 4
3. Spot the difference between 4 and 6
4. Spot the difference between 4 and 7
5. Spot the difference between 2 and 8
6. Spot the difference between 4 and 5
7. Spot the difference between 3 and 5
8. Spot the difference between 2 and 6
9. Spot the difference between 5 and 7
10. Spot the difference between 2 and 7
11. Red Blocks 10 - 4
12. Red Blocks 10 - 1
13. Red Blocks 10 - 2
14. The Chicken Story: seventy-four - sixty-seven
15. The Chicken Story: forty-four - thirty-four
16. The Chicken Story: twenty-eight - twenty
17. The Chicken Story: fifty - forty-six
18. The Chicken Story: thirty - twenty-five
19. The Chicken Story: thirty-seven - thirty-four
20. The Chicken Story: twenty-four - twenty