Open Middle

@openmiddle

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

openmiddle.com Joined February 2014

7.6K Following 28K Followers 857 Posts

Latest posts 5

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Open Middle @openmiddle May 15, 2025

Open Middle embedded problems let you make a warm-up in 30 seconds. See how at openmiddle.com. #openmiddlemath #openmiddle #mathteacher #teacher #math #education #edu #matheducation #productivestruggle #learning

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Open Middle @openmiddle Feb 2

Hey teachers and educators!

We just added 21 new problems to Open Middle, many of which are for High School.

Check them out at openmiddle.com

www.openmiddle.com Open Middle - Challenging math problems worth solving Open Middle offers interactive math problems designed to foster critical thinking. Explore unique challenges that boost problem-solving skills and creativity.

Open Middle @openmiddle Jan 30

You can now use Advanced Search on openmiddle.com to find problems faster. You can find Advanced Search by clicking the "Advanced Search" link directly under the main search box.

Open Middle @openmiddle Jan 30

Algebra teachers, check out these three rational exponent problems from Bryan Anderson. See the hints and answers on Open Middle:
openmiddle.com/rational-expon…
openmiddle.com/rational-expon…
openmiddle.com/rational-expon…

Open Middle @openmiddle Jan 28

This quote from HamiltonHeroes shows how students can't get enough Open Middle problems.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu