We sure loved discussing the Open Number Line last we, but have you ever hear of the Double Open Number Line? In this episode Pam and Kim discuss how the Double Number Line can be used to develop Proportional Reasoning and help prepare students for Ratio Tables.
Talking Points

• A Problem String to develop the Double Open Number Line
• Comparing it to the Ratio Table
• How the Double Open Number Line can prepare students for fractions, rate, and other concepts.
• The percent bar is a Double Number Line?

Check out our free download on Double Number Lines: https://mathisfigureoutable.com/double