Open Number Lines Explained - The Classroom Key
Here's a set of open number lines for use in solving problems.
Open Number Line Strategy for Addition Subtraction FREEBIE! Eight practice sheets introducing and practicing this Common Core math strategy.
Mandy's Tips for Teachers: Strategies for Addition (Freebie!)
Open Number Line Addition - Math Coach's Corner
Open Number Lines are great for place value, addition, subtraction and fractions. These free math workmats can be printed once and used repeatedly. Great way to save paper!
Open Number Line Strategy for addition and subtraction FREEBIE! Brandy Shoemaker on TpT
Strategies for teaching addition and subtraction using open number lines, a Common Core 2nd grade math skill
Demystifying Open Number Lines - BlairTurner.com
Using a hundreds chart as a tool for adding larger numbers. I like the way the kids can show it on the 100's chart AND on a number line.