AI Tutor
Imagine a little green frog sitting on number 3. If it takes one tiny hop forward, where does it land?
It lands right on 4! Taking one hop forward is the same as adding 1.

Adding 1

When you add 1 to a number, you just say the next number you say when counting.
So to solve 4+14 + 1, think: what comes right after 4? It is 5, which means 4+1=54 + 1 = 5!
Now, what do you think happens if the frog decides to hop backward?

Subtracting 1

When you subtract 1, you take one step backward to find the number before.
Think about 2−12 - 1. What number comes right before 2 when counting down? It is 1, so 2−1=12 - 1 = 1.
Are you ready to test how fast your brain can hop forward and backward?

Fast Hop Pairs