I have changed my previous charts to be simple and more economically (and environmentally) friendly. These posters can be used with the Bridges® Math Number Corner for all grade levels. The posters all show which months/grades they can be used for at the bottom and the headings for each column can be written at the top.
You can send this PDF to your local print shop and ask for it to be printed on Arch D paper (size 24 x 36). They can also be printed on regular printer paper and students can use them at their seats.
They are very simple and clean lined.
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