Addition & Subtraction
The progression of Addition & Subtraction
Early Addition & Subtraction strategies (Kinder-1st)
Early Addition & Subtraction strategies (Kinder-1st)
In Kinder they learn to add and subtract within 10, and in 1st grade they learn to add and subtract within 20.
Later Addition & Subtraction strategies (2nd-3rd Grade)
Later Addition & Subtraction strategies (2nd-3rd Grade)
In 2nd and 3rd, they learn to add and subtract within 100 and then 1,000.
Transition to the standard algorithm (4th Grade)
Transition to the standard algorithm (4th Grade)