The given sequence is: $-10, -6, -2, \_, 2, 6, 10$.

To find the missing number, observe the pattern in the sequence:

Each term increases by 4: $-10 + 4 = -6$ $-6 + 4 = -2$ $-2 + 4 = 2$

Thus, the missing number between $-2$ and $2$ is $0$.

The complete sequence is: $-10, -6, -2, 0, 2, 6, 10$.

Would you like a more detailed explanation or have any questions?

Here are 5 related questions for you to explore:

1. What is the general formula for this arithmetic sequence?
2. How can you find the sum of all terms in the sequence?
3. What would the next two terms be after $10$?
4. How does the common difference in an arithmetic sequence affect the pattern?
5. Can you find the 15th term of this arithmetic sequence?

Tip: In an arithmetic sequence, the difference between consecutive terms is always constant, which makes it easy to find any term.