Media Summary: This is one of the most advanced mental math ... by either adding or subtracting the same amount to each number I am maintaining a This video will show you a few subtraction
Constant Difference Strategy - Detailed Analysis & Overview
This is one of the most advanced mental math ... by either adding or subtracting the same amount to each number I am maintaining a This video will show you a few subtraction This project was created with Explain Everything™ Interactive Whiteboard for iPad. Want to help your students think through a subtraction problem instead of following a memorized algorithm? Check out my mini ... Discovering a Distance-based Subtraction Strategy (Constant Difference)
