I'm always looking for materials to do double-duty. Here are posters of mathematical operations in both color and black and white, as well as a smaller version suitable for gluing into math interactive notebooks.
![](https://i1102.photobucket.com/albums/g447/eschaff/Pitners%20Potpourri/sgn1.png)
69b9020515a885ffd7859c571ecd7fa3
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