I am trying to formulate some essential questions that activate prior knowledge and probe the 4 DOK levels for special ed students on 2.NBT.1 which states Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:

I wrote the questions below. Please let me know what you think. Thanks.

Questions to activate prior knowledge:

1.Can you tell how many cubes are in a 10s rod?

2. Do you know that big numbers can be broken down into 100s, 10s, and 1s?

3. Do you know how many ones are in ten?

4. Do you know how many tens are in 100?

5. In the number 252, can you represent it in four ways?

Questions based on the progression of the lesson activity, probing the four DOK levels:

6. Do you remember how many ones make a ten? DOK-1

7. Do you remember how to sort 15 into tens and ones using the 10 rods? DOK-1

8. Can you match the number of 10 rods picture of 25 to the corresponding number on the flash card? DOK-1

9. Can you tell the number of 10s and ones in 52? DOK-1

10. Can you write the number presented to you (252) in four ways (base 10 units, base 10 blocks, expanded form, and word form) in standard form? DOK-1

11. Can you write in the hundreds, -tens, and -ones box the numbers for 252? DOK-2

12. If 560 has 0- ones, 6- tens, and 5- hundreds, can you tell me how many ones, tens, and 100s are in 760? DOK-2

10. Can you represent the number 351 in four different ways (base 10 units, base 10 blocks, expanded form, and word form)? DOK-2

11. Can you represent 450 in four different ways? DOK-2

12. Can you represent 502 in four different ways? DOK-2

13. How do you know that there are zero tens in 502? DOK-3

14. Are 7-tens and 5 -ones the same as 5-tens and 7= ones? Why or why not? Explain your thinking. DOK-3

15. Given the numbers 1,4,6,8,9, can you show all 2-digit numbers that have a tens digit with a value less than 8-, but a ones digit with a value greater than 4? DOK-3

16. How many bundles of tens are equivalent to 500? How do you know? Show me. DOK-3

17. How many different numbers can you make between 700 and 750 with a 6 in the tens place? With a 6 in the ones place?

18. How are 867 and 464 alike and how are they different? DOK-4

19. How many different numbers can you make between 700 and 750 with a 6 in the tens place? With a 6 in the ones place? DOK-4

20. Can you construct a $999 house (where 100 -block stands for $100., 10- block stands for $10., and 1- block stands for $1?) DOK-4