Now that using a protractor is a Common Core skill for 4th grade, here is a little freebie to help your students, (and maybe you too, if it has been a while since you've had to use one!)You get a large version of the poster which can be projected on your interactive white board or printed out poster-sized.

geometric measurement recognizing perimeter | Area and Perimeter Wall Chart for 3rd Grade | Easy Common Core Student ...

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