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If you teach others through online workshops, then you should check out my webinar recording on 6 counterintuitive lessons learned I wish I had understood earlier. For example, should workshops be more like Netflix or traditional TV? robertkaplinsky.com/pdwebinar #MTBoS #iteachmath

Have you seen samedifferentimages.wordpress.com from Brian Bushart 🏳️‍🌈? Same or Different? is a routine that provides students opportunities to construct arguments when comparing objects, such as numbers or shapes. #iteachmath

What can a horse that could add, subtract, multiply, and divide teach us about how we ask our students questions? robertkaplinsky.com/never-ask-ques…

I found the person from the word problem.

This real life example of counting collections uses a Coke Freestyle machine as the context for exploring various adding strategies. robertkaplinsky.com/work/how-many-…

If you're a presenter, you'll want to read this short post about a philosophy to avoid sounding like you say the same thing every time. robertkaplinsky.com/presenters-lik…

Are your high school students working with complex numbers? Try these two Open Middle problems out to see what misconceptions they have: openmiddle.com/complex-number… openmiddle.com/complex-number…

Would you believe that when NASA stopped painting the space shuttle's fuel tank white, they saved 600 lb of weight! Let students use their understanding of surface area to figure it out. robertkaplinsky.com/work/fuel-tank/

Here are two Open Middle problems from Dan Luevanos that will challenge your 8th graders' understandings of multi-step equations. openmiddle.com/multi-step-equ… openmiddle.com/multi-step-equ…

I've come up with my favorite way to think about mathematical modeling. I think it has lots of potential and I'd really appreciate your feedback. robertkaplinsky.com/mathematical-m…

Does a dual flush toilet actually save water? Well, it depends on your ratio of "liquids" and "solids". This will certainly be a memorable lesson. robertkaplinsky.com/work/toilet/

This 6th grade adding decimals problem from Giselle Garcia on Open Middle will get your kids thinking conceptually! openmiddle.com/addting-multi-…

If you're a current or aspiring educational consultant, I made a free webinar all about using email and social media to increase your conference attendance, book/product sales, and promote your work. Watch it here: info.robertkaplinsky.com/emailfunnel/

I love this video of Kristin Gray from the Teaching Channel that illustrates the power of collaboratively planning and implementing a lesson (similar to lesson study). Check it out: learn.teachingchannel.com/video/build-co… #MTBoS #iteachmath

I spent most of my high school years living in a group home. I usually try to avoid talking about it, but I realize that I have a perspective that might be helpful for other educators. So, here's what I wish teachers knew. robertkaplinsky.com/wish-teachers-…

How do you determine which product is the best value for your money? Is a coupon always worth using? robertkaplinsky.com/work/carrots/

Online retailer Amazon makes billions of dollars in additional sales each year because they use an algorithm to figure out what products to recommend to you. Here's how they used mathematical modeling to create it. robertkaplinsky.com/math-modeling-…

Strengthen students' understanding of decimal addition and place value with this Open Middle problem from Daniel Luevanos. openmiddle.com/adding-decimal…

This poker-based lesson on a machine that deals the same hand 100 times will help students discover the difference between theoretical and experimental probability. robertkaplinsky.com/work/video-pok…

Challenge your Algebra students' conceptual understanding of inequality solution sets with this Open Middle problem from Daniel Luevanos. openmiddle.com/create-an-ineq…