Robert Kaplinsky

Holy crap. This is fire! I mean the flow, the editing, everything. Wow! This is incredible. Well done!

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...

Here are responses to four of my most frequently asked questions about Depth of Knowledge (#DOK).

robertkaplinsky.com/four-as...

If you teach 3rd or 4th grade and are looking for a real world context for adding time, then check out this lesson that uses the context of a road trip and GPS navigation to estimate an arrival time.
robertkaplinsky.com/work/ar...

I share my responses to frequently asked questions about problem-based learning in math in this blog post.

robertkaplinsky.com/problem...

If you're a K to 7th teacher looking for engaging problem solving tasks, then check out Graham Fletcher's problems at gfletchy.com/3-act-lessons/.

Want students to practice applying math to real life, but wish you had something more engaging and meaningful than word problems? Then you should check out my recorded webinar with elementary, middle, and high school versions.

robertkaplinsky.com/webinar

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...

Want a fun (and gross) context for teaching linear and quadratic functions from a table of values? Check out this lesson and video featuring two competitive eaters to figure out how many hot dogs they've each eaten.

robertkaplinsky.com/work/ho...

Here's a professional development resource to help improve teachers' ability to ask questions that get students explaining their reasoning.

robertkaplinsky.com/questio...

Thank you!

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

How do you figure out the distances that should be listed on a freeway sign? This lesson uses a picture of a freeway sign with missing distances and a map with where the freeway sign is located to provide a context for determining those distances.
robertkaplinsky.com/work/wh...

💯

How many of these do you have, bro?

How deeply do your students understand parallel and perpendicular lines if they can't create sets of points to define the lines? Try out these two Open Middle problems from Nanette Johnson:
www.openmiddle.com/perpendi...
www.openmiddle.com/parallel...

Our best hope for growing as educators is to learn from one another. Here's my case for why I want people to #ObserveMe.

robertkaplinsky.com/observeme/

How many times will a case of paper jam when it's advertised as 99.99% jam-free? I wish it better matched my own experience with copy machines!

robertkaplinsky.com/work/ho...

Weird. Wonder why. Thank you.

Have your experiences as a math student been rocky like mine? Here's my story. I'd love to read about yours too. #MyMathStory

robertkaplinsky.com/my-math...

Don't forget about the 100+ free challenging tasks for secondary math teachers at www.map.mathshell.org/lesso... There are around 20 per grade level.

If you're a fan of Open Middle problems but want more support using them with your students, then you should check out my mini workshop on @grassrootsworkshops.com‬.

grassrootsworkshops.com/wor...

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...

Have you ever had two coupons you could use and thought about which would benefit you more? Here's a context to put students in a similar situation. When is it better to use the 10% off coupon and when is it better to get a free item?

robertkaplinsky.com/work/ch...

😂

If you use the Smarter Balanced assessment for the Common Core standardized math test, avoid making this score interpretation mistake.

robertkaplinsky.com/avoid-s...

Who hurt you that made you think raw was acceptable?

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-...

Teaching least common multiple? Check out this lesson starring Steve Martin in Father of the Bride that uses the context of buying hot dogs and buns as a context for making sense of the mathematics.

robertkaplinsky.com/work/ho...

Going toasted, reese's, and Graham cracker I think.