Basic Subtraction - KP Mathematics ten-frame tile videos

Описание: Marcia uses KP® Ten-Frame Tiles to demonstrate “dot subtraction,” the strategy of using dots on a ten-frame to represent the subtrahend. First, she shows 7 – 3 = 4 and then 13 – 5, subtraction that requires ungrouping in the tens place. “Dot subtraction” reinforces the relationship between addition and subtraction by using the “take-from-ten” strategy --- taking away ones first in the ones place and then taking away any additional ones by ungrouping the ten.