Math Slope Idea

Here is an idea for students to practice measuring angles or finding slope all around them. Have students take pictures with various angled lines.

Save the grid overlay here.

On a Mac:

Video how to Result:

On a PC:

Video How to (bad sound you may want to mute) and result:

also posted on Discovery, 12/13/12

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Subtraction Poetry

This is an interesting idea I came across earlier in the year. Thank you to Austin Kleon, a writer and artist who lives in Texas, for the idea. The idea of subtraction poetry involves taking words away in order for the information to take a new form.
Using a Mac computer with Preview, take a piece of informational text in pdf, annotate to strike through the unwanted words and highlight the final product. How might you or your students use this?