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Need some posters that explain the mathematical practices from the Common Core in terms the students can understand?  This page has links to displays for grades K-7.

Need a great activity to get your students working on problems while moving about the room? This middle school math activity is explained in a short video, but while the topic is math, you can adapt the exercise to other topics too!

Do you ask your students to show their work? Should they? This article has an interesting perspective.

I ask them too because I teach alg, these problems become more complicated as the year moves on and they need to write their steps down because there are multiple steps. The ones that have been doing it in their heads for years suddenly cant seem to do that anymore and find themselves in a tricky situation because they don't know how to show their work.