Capture 5 Video
This video shows how to play the Capture 5 game from the third grade Investigations curriculum.
Finding the Difference on the Open Number Line
This shows students how to use a number line to find the difference between numbers when subtracting.
Subtracting on the Open Number Line
This shows how students use an open number line to show take away subtraction strategies.
Subtracting Using Base Ten Blocks
This shows how a student could model subtraction using base ten blocks.