Ask the student to identify any errors in the sequence.
Offer hints and feedback as necessary, ensuring the student understands where numbers are out of order.
Step 3
Conclusion and Review
1 minute
Recap the lesson and key indicators of proper sequencing.
Encourage the student to practice at home or during independent work time.
Worksheet
Vertical Number Strips Worksheet
Welcome, Number Detective! In this worksheet, you'll work with vertical strips of numbers. Some of the sequences are correct, and some have mistakes. Your job is to identify errors and fix the sequence. Write your answer in the space provided.
Exercise 1: Find the Mistake
Below is a vertical strip of numbers from 1 to 10. One number is out of place. Read carefully and circle the incorrect number. After that, write the correct sequence below.
1
2
3
5
4
6
7
8
9
10
Correct Sequence:
Exercise 2: Missing Number Mystery
In this strip, one number is missing. Look at the sequence and write down the missing number in the blank. Then, rewrite the sequence including the missing number in the correct order.
2
3
_
5
6
7
Missing Number:
Full Sequence:
Exercise 3: Correct the Mistake
Below is a sequence that is mostly correct, but one number is replaced by a wrong number. Identify the error and then write the corrected strip of numbers.
8
9
10
11
12
14
15
Corrected Sequence:
Exercise 4: Sequencing Challenge
Rearrange the following mixed-up numbers into the correct numerical order from smallest to largest. Write the correct sequence vertically.
Numbers: 21, 19, 20, 18, 22
Your ordered sequence:
Exercise 5: Error Detection in a Long Strip
Below is a longer vertical sequence. There are two errors in this strip (a wrong number and a missing number). Identify and describe the errors, then write the corrected sequence.
15
16
17
19
20
21
23
24
25
List the errors you found:
Corrected Sequence:
Great work, Number Detective! Check your work and review the order of numbers. Remember to take your time and look carefully at each number.
