# Lesson 4 One More and One Less

Let’s find 1 more or 1 less.

## Warm-up How Many Do You See: One Less

How many do you see?

How do you see them?

## Activity 1 Count Out and Show One More or One Less

Show your number.

Show how your partner changed the number.

Round 1:

Starting Number:

New Number:

Round 2:

Starting Number:

New Number:

Round 3:

Starting Number:

New Number:

Round 4:

Starting Number:

New Number:

## Activity 2 Color One More or One Less

Roll to choose a number and 1 more or 1 less.

Color the number that is 1 more or 1 less than your number.

Record the starting number and the new number.

Starting Number:

New Number:

Round 1:

Round 2:

Round 3:

Round 4:

## Activity 3 Centers: Choice Time

Choose a center.