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Open Middle

@openmiddle.com

Challenging math problems worth solving. Check out our online workshop (http://grts.ws/om) and book (http://grts.ws/omm) from Open Middle co-founder Robert Kaplinsky (https://bsky.app/profile/robertkaplinsky.bsky.social).

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Posts 27.11.2024
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Latest posts by Open Middle @openmiddle.com

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

30.01.2026 00:00 👍 1 🔁 0 💬 0 📌 0
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This quote from Katie Clark shows how students love Open Middle problems - and the productive struggle.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

28.01.2026 00:00 👍 0 🔁 0 💬 0 📌 0
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Help your students think deeply about radicals with this Open Middle problem from Phillip Haislip-Hansberry. www.openmiddle.com/comparin...

23.01.2026 00:00 👍 0 🔁 0 💬 0 📌 0
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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

21.01.2026 00:00 👍 1 🔁 0 💬 0 📌 0
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Are your students working on parallel and perpendicular lines? Try out these two Open Middle problems from Bryan Anderson:
www.openmiddle.com/equation...
www.openmiddle.com/equation...

16.01.2026 00:00 👍 0 🔁 0 💬 0 📌 0
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This quote from Kate Hayes shows how Open Middle problems lead to deeper conversations.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

14.01.2026 00:00 👍 0 🔁 0 💬 0 📌 0
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If your students are learning about perpendicular lines, try out this Open Middle problem from Andy Schwen with them: www.openmiddle.com/perpendi...

09.01.2026 00:00 👍 0 🔁 0 💬 0 📌 0
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This quote from Kori Dale shows how Open Middle problems let students build off from their mistakes, and grow.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

07.01.2026 00:00 👍 2 🔁 1 💬 0 📌 0
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Want to challenge your Geometry students to find the area of triangles? Try out this Open Middle problem from Dan Wulf. www.openmiddle.com/area-of-...

02.01.2026 00:00 👍 0 🔁 0 💬 0 📌 0
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This quote from Marty Joyce shows how Open Middle problems get everyone talking - even those who don't usually.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

31.12.2025 00:00 👍 1 🔁 0 💬 0 📌 0
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Here's a challenging Open Middle problem to help students develop conceptual understanding of quadratics in standard form: www.openmiddle.com/maximum-...

26.12.2025 00:00 👍 0 🔁 0 💬 0 📌 0
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This quote from a student shows how Open Middle problems resonate with students.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

24.12.2025 00:00 👍 0 🔁 0 💬 0 📌 0
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Here's a matrix multiplication problem from Bryan Anderson that will help you bring out their conceptual understanding. See hints and answers on Open Middle. www.openmiddle.com/matrix-m...

19.12.2025 00:00 👍 1 🔁 0 💬 0 📌 0
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This quote from MiddleWeb shows how Open Middle problems give you X-ray vision that you otherwise wouldn't have.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

17.12.2025 00:00 👍 3 🔁 0 💬 0 📌 0
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Are your students working on radical equations? This Open Middle problem from Jonathan Newman will challenge their understandings! www.openmiddle.com/radical-...

12.12.2025 00:00 👍 0 🔁 0 💬 0 📌 0
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This quote from Caitlin Tucker demonstrates how Open Middle problems help students find math fun!
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

10.12.2025 00:00 👍 0 🔁 0 💬 0 📌 0
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If your high school students are working on adding vectors, try out this Open Middle problem from Bryan Anderson. www.openmiddle.com/adding-v...

05.12.2025 00:00 👍 0 🔁 0 💬 0 📌 0
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This quote from Cory Rawlins is an amazing situation to be in - where students want to do more problems!
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

03.12.2025 00:00 👍 1 🔁 0 💬 0 📌 0
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Are your students learning about parallel lines and transversals? Try out these two Open Middle problems from Shelli Foust:
www.openmiddle.com/parallel...
www.openmiddle.com/parallel...

28.11.2025 00:00 👍 0 🔁 0 💬 0 📌 0
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This quote from MiddleWeb explains how Open Middle problems resonate with students.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

26.11.2025 00:00 👍 0 🔁 0 💬 0 📌 0
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Algebra teachers, check out these three rational exponent problems from Bryan Anderson. See the hints and answers on Open Middle:
www.openmiddle.com/rational...
www.openmiddle.com/rational...
www.openmiddle.com/rational...

21.11.2025 00:00 👍 0 🔁 0 💬 0 📌 0
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This quote from Amanda Beeler is something every teacher wants to hear. #iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

19.11.2025 00:00 👍 2 🔁 1 💬 0 📌 0
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Help your students think deeply about radicals with this Open Middle problem from Phillip Haislip-Hansberry. www.openmiddle.com/comparin...

14.11.2025 00:00 👍 1 🔁 0 💬 0 📌 0
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This quote from Diane Viola describes something we all love to see in our classroom. #iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

12.11.2025 00:00 👍 2 🔁 0 💬 0 📌 0
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Are your students working on parallel and perpendicular lines? Try out these two Open Middle problems from Bryan Anderson:
www.openmiddle.com/equation...
www.openmiddle.com/equation...

07.11.2025 00:00 👍 0 🔁 1 💬 0 📌 0
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This quote from Kristen M Acosta shows an amazing moment to have as a teacher.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

05.11.2025 00:00 👍 3 🔁 0 💬 0 📌 0
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If your students are learning about perpendicular lines, try out this Open Middle problem from Andy Schwen with them: www.openmiddle.com/perpendi...

30.10.2025 23:00 👍 0 🔁 0 💬 0 📌 0
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This quote from SrtaWagner shows how Open Middle problems get students thinking - even on a Monday.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

28.10.2025 23:00 👍 0 🔁 0 💬 0 📌 0
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Want to challenge your Geometry students to find the area of triangles? Try out this Open Middle problem from Dan Wulf. www.openmiddle.com/area-of-...

23.10.2025 23:00 👍 0 🔁 0 💬 0 📌 0
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This quote from NWEA is a good way to explain Open Middle problems.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

21.10.2025 23:00 👍 1 🔁 0 💬 0 📌 0