We add to find the total of parts'

1

• We add to find the total of parts.
• When we solve story problems, we first read the
  story. Then we decide if we add or subtract.
  Next, we write a number sentence for the story.
  Then we solve the number sentence and label the
  answer.

Gr1-U12-L1
2

• We can add more than 2 numbers.
• We can count to add more than 2 numbers.
• Changing the order in which we add the numbers
  doesnt change the total.

Gr1-U12-L2
3

• We subtract when we take away part of a total and
  find out how much is left.
• When we solve story problems, we first read the
  story. Then we decide if we add or subtract.
  Next, we write a number sentence for the story.
  Then we solve the number sentence and label the
  answer.

Gr1-U12-L3
4

• We compare when we want to find the difference.
• When we compare numbers, we can subtract to find
  the difference.

Gr1-U12-L4
5

• We can count back what we have from what we want
  to find out how much more is needed.
• We can subtract what we have from what we want to
  find out how much more is needed.

Gr1-U12-L5
6

• When the scale is balanced, the number of cubes
  on both sides of the scale are equal.
• When we have an addition problem with a missing
  part, we have to find the number that makes the 2
  sides of the problem equal.

Gr1-U12-L6
7

• When we solve story problems, we first read the
  story. Then we decide if we add or subtract.
  Next, we write a number sentence for the story.
  Then we solve the number sentence and label the
  answer.

Gr1-U12-L7