A free and open set of professional development resources for learning and teaching mathematics. |
This is a student screencast explanation done using the Equivalent Expressions - Distributive Property (3) tool.
This resource was collaboratively designed by OER in Mathematics Professional Development Project partners from Maine RSU#54 & RSU#11 and staff from Education Development Center, Inc. This work is licensed under the Creative Commons Attribution-Non Commercial-Share Alike 3.0 License.