We are going to practice using the number
line to find one more and one less than a number.
For instance, if I were trying to
find one more than and one less than the number 7
I would find 7 on the number line (I like using my pointer finger to help me find the number
so it's right there). If I want
to find one more than the number 7, I want
to jump forward. So I like to use my finger
to jump or hop to the next number. One more
than the number 7 would be (hop) 8. Let's
say I want to find one less than the number 7.
I'm going to go back to the number 7 using
my pointer finger and then I'm going to go
backwards now to find one less. So I'm going
to go hop backwards now. Hop. One less than
the number 7 is 6. Let's try a different number.
How about the number 19? I'm going to find
one more and one less than the number 19.
I'm going to find 19 on the number line. It's
right there, so let's find one more than 19.
I'm going to hop forward. Hop. One more than
19 is 20. Let's find one less than the number
19. I go back to 19 and now I'm going to hop back now.  I hop
backwards and one less than 19 is 18. Using
the number line, you can help yourself find
numbers that are one more and one less than
a number.
