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This vertical number line looks like a thermometer and is perfect to hang in a classroom where students are learning about integers. Students can relate negative numbers to negative temperatures. This helps when discussing absolute value and integer operations.
There is a black & white and a color version included. The cover shows the B&W version that has been colored with crayons. The color version is blue, red and purple. (you can see this in the preview). Each page overlaps a little, making it easier to tape together - just trim and align to the next page. When assembled, the thermometer is just under 7 vertical pages long.
Math word walls have completely changed my teaching. I write more about this in the blog post 5 Ways Math Word Walls Have Changed My Teaching
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