Open Middle (@openmiddle) 's Twitter Profile
Open Middle

@openmiddle

Challenging math problems worth solving. Check out our online workshop (grts.ws/om) and book (grts.ws/omm) by @robertkaplinsky. Tweets: @laura_wagenman

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linkhttps://www.openmiddle.com calendar_today01-02-2014 05:48:22

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Open Middle
@openmiddle

3 months ago

If your students are learning about perpendicular lines, try out this Open Middle problem from Andy Schwen with them: openmiddle.com/perpendicular-…

If your students are learning about perpendicular lines, try out this Open Middle problem from Andy Schwen with them: openmiddle.com/perpendicular-…