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Reposted by Open Middle

Robert Kaplinsky @robertkaplinsky.com · 19/05/2026

I have created lots of video sharing @openmiddle.com problems using a lightboard on Instagram and TikTok. Here's an example. I'd appreciate you following me there as I'm not using Bluesky as often anymore. Instagram: instagram.com/robert_kaplins… TikTok: tiktok.com/@robertkaplins��

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Open Middle @openmiddle.com · 30/01/2026

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...

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Open Middle @openmiddle.com · 23/01/2026

Help your students think deeply about radicals with this Open Middle problem from Phillip Haislip-Hansberry. www.openmiddle.com/comparin...

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Open Middle @openmiddle.com · 16/01/2026

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...

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Open Middle @openmiddle.com · 09/01/2026

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

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Open Middle @openmiddle.com · 02/01/2026

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-...

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Open Middle @openmiddle.com · 26/12/2025

Here's a challenging Open Middle problem to help students develop conceptual understanding of quadratics in standard form: www.openmiddle.com/maximum-...

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Open Middle @openmiddle.com · 19/12/2025

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...

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Open Middle @openmiddle.com · 17/12/2025

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

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Open Middle @openmiddle.com · 12/12/2025

Are your students working on radical equations? This Open Middle problem from Jonathan Newman will challenge their understandings! www.openmiddle.com/radical-...

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Open Middle @openmiddle.com · 05/12/2025

If your high school students are working on adding vectors, try out this Open Middle problem from Bryan Anderson. www.openmiddle.com/adding-v...

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Open Middle @openmiddle.com · 28/11/2025

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...

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Open Middle @openmiddle.com · 21/11/2025

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Open Middle @openmiddle.com · 14/11/2025

Help your students think deeply about radicals with this Open Middle problem from Phillip Haislip-Hansberry. www.openmiddle.com/comparin...

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Open Middle @openmiddle.com · 07/11/2025

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...

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Open Middle @openmiddle.com · 30/10/2025

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

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Open Middle @openmiddle.com · 24/10/2025

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-...

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Open Middle @openmiddle.com · 17/10/2025

Here's a challenging Open Middle problem to help students develop conceptual understanding of quadratics in standard form: www.openmiddle.com/maximum-...

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Open Middle @openmiddle.com · 15/10/2025

From Kristen M Acosta, when students can't stop working on an Open Middle problem, you know you've done something right. #iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu

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Open Middle @openmiddle.com · 10/10/2025

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...

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Open Middle @openmiddle.com · 03/10/2025

Are your students working on radical equations? This Open Middle problem from Jonathan Newman will challenge their understandings! www.openmiddle.com/radical-...

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Open Middle @openmiddle.com · 26/09/2025

If your high school students are working on adding vectors, try out this Open Middle problem from Bryan Anderson. www.openmiddle.com/adding-v...

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Open Middle @openmiddle.com · 19/09/2025

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...

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Open Middle @openmiddle.com · 12/09/2025

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Open Middle @openmiddle.com · 05/09/2025

Help your students think deeply about radicals with this Open Middle problem from Phillip Haislip-Hansberry. www.openmiddle.com/comparin...

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Open Middle @openmiddle.com · 29/08/2025

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...

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Open Middle @openmiddle.com · 22/08/2025

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

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Open Middle @openmiddle.com · 15/08/2025

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-...

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